Explanation
To create a content collection that automatically updates when new content is added, an administrator should take two steps: create a dynamic content collection and create criteria rules to filter content. A dynamic content collection is a collection that automatically includes content based on criteria rules, such as content type, tag, category, etc. A criteria rule is a rule that defines how to filter content for a dynamic content collection based on one or more conditions. References: Dynamic Content Collections; Criteria Rules

Explanation
page configuration is a feature that allows you to customize the layout and content of your storefront pages.
Configuration cache is a feature that stores your page configuration settings in memory for faster loading times. When you change the layout of a page from one column to three column, you need to rebuild the configuration cache in order to see the changes on the storefront. Rebuilding the configuration cache clears the existing cache and reloads the page configuration settings from the database. Therefore, option D is correct.
Options A, B, and C are false because assigning a new price list, resetting the org, and performing indexing are not actions that are required or related to changing the layout of a page or seeing the changes on the storefront.

Explanation
According to the [Order Confirmation Email] page, order confirmation email is a feature that allows you to send an email notification to buyers when they place an order on your B2B Commerce site. Order confirmation email can be configured using Process Builder and Email Alerts in Salesforce Setup. To configure order confirmation email, you need to do the following steps:
Create an email template that contains the information and format that you want to use for your order confirmation email. You can use merge fields to include dynamic data from your order records, such as order number, order date, order total, etc.
Set up organization-wide addresses that specify the email address and display name that you want to use as the sender of your order confirmation email. You can use different organization-wide addresses for different stores or reorder portals.
Create an email alert that defines the email template, organization-wide address, recipient type, and recipient field that you want to use for your order confirmation email. You can use different email alerts for different stores or reorder portals.
Add an auto-launched flow that triggers when an order is created or updated and has a status of Submitted. The flow should include a Send Email element that references the email alert that you created for your order confirmation email. Therefore, option C is correct. Options A, B, and D are false because they are not configuration steps that are required to send order confirmation emails to buyers.
Creating a trigger on order creation, implementing the SendOrderConfirmation interface from Apex code, locating the existing 'Send Order Confirmation Email' sub-flow, adding it to the last step, and checking the box called 'Send order confirmation Email to buyer' in the Commerce Apps store Administration are alternative or outdated methods that are not recommended or supported for sending order confirmation emails to buyers. References: [Order Confirmation Email], Order Confirmation Email Overview

Explanation
B2B Commerce setup is a process that involves configuring various aspects of your B2B Commerce site both inside and outside the commerce app. The commerce app is an app that allows you to manage your B2B Commerce data and functionality in Salesforce. Three of the configuration aspects that must be set up outside the commerce app in order to deploy and activate B2B Commerce instance both for internal and external users are:
Profiles and permission sets. Profiles and permission sets are features that allow you to control the access level and permissions of your users for your B2B Commerce site. You need to set up profiles and permission sets outside the commerce app in Salesforce Setup by assigning the appropriate user licenses, object permissions, field permissions, record types, page layouts, etc.
Multi-factor authentication. Multi-factor authentication is a feature that adds an extra layer of security to your B2B Commerce site by requiring users to verify their identity using a second factor, such as a mobile app or a security key. You need to set up multi-factor authentication outside the commerce app in Salesforce Setup by enabling it for your org, configuring the verification methods, setting the verification policies, etc.
Experience sites. Experience sites are features that allow you to create and manage web pages for your B2B Commerce site using Experience Builder or Site.com Studio. You need to set up experience sites outside the commerce app in Experience Workspaces by creating a new site or cloning an existing site, choosing a template or theme, adding components and pages, publishing and activating your site, etc.
Therefore, options A, B, and D are correct. Options C and E are false because they are not configuration aspects that must be set up outside the commerce app in order to deploy and activate B2B Commerce instance both for internal and external users. Custom attributes and Salesforce CMS are features that can be set up inside the commerce app in CC Admin by using the Custom Attributes workspace or the Content Management workspace. References: [B2B Commerce Setup], B2B Commerce Setup Overview

Explanation
After updating a Page Label record, you must rebuild and activate the Configuration Cache in order to see the changes reflected in the storefront. This is because the Configuration Cache contains all of the static data that is used to render the storefront, including Page Labels.