The correct answers are C. My Domain must be deployed and D. The component is tagged for record pages instead of home pages.

Salesforce custom Lightning components must be properly configured before they appear in Lightning App Builder. Salesforce Trailhead explains that custom components configured for Lightning App Builder appear in the Lightning Components pane, and the component bundle must be compatible with Lightning App Builder and Lightning pages.

C is correct because Salesforce requires My Domain for adding custom Lightning components in Lightning Experience/App Builder scenarios. Salesforce Help notes that users cannot add a custom Lightning component without enabling and deploying My Domain.

D is correct because Lightning components must be exposed for the correct page type. A component exposed only for record pages will not appear for a Lightning Home page. Salesforce Developer documentation states that lightning__HomePage enables a component to be used on a Home page, while record-page-only configuration is separate.

Why others are incorrect:

A is incorrect because a custom tab is not required to add components to a Lightning Home page.

B is incorrect because “developer permission” is not the normal reason a downloaded component cannot be added to a Lightning Home page.

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