Three components that can be used to modify the user experience in the Order Summary detailpage are:
Tabs. Tabs are a type of component that allow users to switch between different views or subpages on a record page. Tabs can contain other components, such as charts, reports, or custom components, that display different information orfunctionality related to a record. The administrator can use the Lightning App Builder to add and customize tabs on the Order Summary detail page to give users more options and flexibility.
Accordion. Accordion is a type of component that allow users to expand and collapse sections of a record page. Accordion can contain other components, such as fields, related lists, or custom components, that display different information or functionality related to a record. The administrator can use the Lightning App Builder to add and customize accordion on the Order Summary detail page to give users more control and visibility.
Related List-Single. Related List-Single is a type of component that displays a single related list for a record. A related list is a list ofrecords that are linked to another record by a relationship field, such as lookup or master-detail. The administrator can use the Lightning App Builder to add and customize related list-single on the Order Summary detail page to give users more access andcontext.
Verified Reference: https://help.salesforce.com/s/articleView?id=sf.lightning_app_builder_components.htm&type=5

The best way for the administrator to accomplish this task is to add the "Order Routing Rank By Closest Distance" action to the fulfillment flow. This action is a flow core action that ranks the fulfillment locations by their distance from the delivery location, and returns a list of ranked locations. The administrator can use this action to find the optimal fulfillment location for each order based on proximity. Verified Reference:https://help.salesforce.com/s/articleView?id=sf.flow_ref_elements_om_actions_order_routing_rank_by_closest_distance.htm&type=5

Three steps that are required when deploying changes via change sets are:
Create the change set in the sandbox org. This is the first step where the administrator selects the metadata components that they wantto deploy and adds them to a change set in the source org, which is usually a sandbox org.
Upload the change set to the target org. This is the second step where the administrator sends the change set from the source org to the destination org, which is usually a production org or another sandbox org. The administrator needs to have a deployment connection with the target org and permission to upload change sets.
Deploy the change set in the target org. This is the final step where the administrator validates and deploys the change set in the destination org. The administrator needs to have permission to deploy change sets and resolve any deployment errors or warnings.
Verified Reference: https://help.salesforce.com/s/articleView?id=sf.changesets_create_outbound.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.changesets_deploy.htm&type=5

Three statements that are true about change sets are:
Sending a change set between two orgs requires a deployment connection. A deployment connection is a link between two orgs thatallows one org to send change sets to another org.
Change sets can only be sent between orgs that are affiliated with a production org. A production org is an org that is used for live operations and data, and it can have one or more sandbox orgs that areused for development and testing. Change sets can only be sent from a sandbox org to its associated production org, or from one sandbox org to another sandbox org that shares the same production org.
Change sets can contain only modifications made throughthe Setup menu. A change set is a collection of metadata components that can be deployed from one org to another. Metadata components are customizations that are made through the Setup menu, such as custom objects, fields, workflows, etc.
Verified Reference: https://help.salesforce.com/s/articleView?id=sf.changesets_about.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.changesets_components.htm&type=5

The best way for the administrator to meet this requirement is to modify the compact layout on the Credit Memo object. A Credit Memo is a record that represents a refund or credit issued to a customer for an order or part of an order. A Credit Memo has various fields and related lists that display information such as the credit amount, status, reason, etc. A compact layout is a type of layout that determines which fields appear in the highlights panel at the top of a record page in Lightning Experience or Salesforce mobile app. The administrator can use the Object Manager to modify the compact layout on the Credit Memo object and add the Total Amount field to the compact layout. This way, the sales team can see the Total Amount field in the highlights panel at the top of the Credit Memo record page. Verified Reference: https://help.salesforce.com/s/articleView?id=sf.order_management_credit_memo.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.compact_layouts_overview.htm&type=5