To give guest users access to a custom object, CK can use guest user organization-wide defaults (OWD).
OWD are a feature that allows you to set the default level of access that guest users have to records of a custom object. You can use OWD to grant Read Only or Read/Write access to guest users for a custom object.
For example, CK can use OWD to give guest users Read Only access to the VolunteeringEvent object.

Two ways the consultant should associate the articles with topics are A and D. Topics are keywords or phrases that help users find and organize content in Experience Cloud sites. To associate articles with topics, you can select the appropriate topics on the Knowledge tab within Lightning Experience, which allows you to view and edit articles in a list or Kanban view. You can also manually add one or more topics to each article within Workspaces, which allows you to create and manage articles in a collaborative environment.

A robots.txt file is a text file that tells web crawlers which pages or files the crawler can or can't request from your site. This is used mainly to avoid overloading your site with requests; it is not a mechanism for keeping a web page out of Google. You can create a custom robots.txt file for your Experience Cloud site to control how search engines index your site.
To make your Experience Cloud site visible to search engines, you also need to make sure that your site is public and activated. A public site allows anyone on the internet to access your site without logging in. An activated site is live and ready for visitors.

To help UC with user management, UC should delegate external user administration to its partners. This will allow UC to grant permission to its partners to create new users or reset passwords for partner employees without involving UC's administrators. UC can use Delegated External User Administration, which is a feature that allows UC to assign specific users as delegated administrators who can manage external users in their own accounts.

When selecting a template for your sites and portals, you need to keep in mind some points, such as:
Insurance Agent Portal template becomes available once Financial Services Cloud is correctly set up in an org. This template is designed for insurance agents who need to manage their leads, opportunities, policies, claims, and referrals.
Industry-specific templates as well as Lightning Bolt solutions are available today. Templates are preconfigured site designs that include pages, components, and settings. Lightning Bolt solutions are industry-specific solutions that include templates, themes, flows, apps, and components.