To boost productivity by providing insights at the start of each day, the administrator should add three sales-specific standard Lightning components to the homepage:
Activities, which shows tasks and events related to records that matter most to users Assistant, which provides personalized suggestions and reminders for key updates and actions Key Deals, which highlights important opportunities that need attention or are close to closing Path and Performance Chart are not standard Lightning components, but custom components that can be added to specific objects or pages. Reference: https://help.salesforce.com/s/articleView?id=sf.home_components.htm&type=5

A roll-up summary field is a type of field that calculates values from related records, such as the count of child records or the sum of a field on child records. In this case, the administrator can add a roll-up summary field to the open house object to track the number of visitors by counting the child records on the visitors object. Reference: https://help.salesforce.com/s/articleView?id=sf.fields_about_roll_up_summary_fields.htm&type=5

Component visibility allows you to restrict the visibility of a related list based on a permission set.

The contact hierarchy is a feature that allows users to view contacts related to an account in a hierarchical tree structure based on their role or position within the account. The contact hierarchy respects record-level access by user, meaning that users can see only those contacts that they have access to based on their profile permissions and sharing settings. The other options are incorrect because contact hierarchy is not limited to 3,000 contacts at one time (it can display up to 5,000 contacts), customizing hierarchy columns does not change the recently viewed contacts list view (it only affects how contacts are displayed in the hierarchy), and sharing settings are not ignored by contacts displayed in the contact hierarchy (they determine which contacts are visible to users). Reference: https://help.salesforce.com/s/articleView?id=sf.contacts_hierarchy.htm&type=5

Split views are a feature that allows users to view records as a split list on object home pages in Lightning Experience apps that use console navigation. Split views show records in two panes: a list view pane on the left and a record detail pane on the right. Users can switch between different list views and records without losing context or scrolling. However, split views are only available on standard objects such as accounts, contacts, leads, opportunities, cases, etc., and not on custom objects such as shipments. Reference: https://help.salesforce.com/s/articleView?id=sf.lex_split_view.htm&type=5