A restricted picklist is a type of picklist that enforces the integrity of the picklist values by allowing only values defined in the picklist during data entry or import operations. If the restricted picklist checkbox is checked for a picklist field, then any records with values not defined in the picklist will cause errors during import operations. However, if the restricted picklist checkbox is unchecked for a picklist field, then any records with values not defined in the picklist will be imported without errors. References: https://help.
salesforce.com/s/articleView?id=sf.picklist_limitations.htm&type=5

Account teams are groups of users who work together on an account. You can enable account teams in Setup and assign team roles and access levels for each team member. Users can set up a default account team that is automatically added to any account that they own or create. This makes it easier for teams to collaborate with the same customer without manually sharing each account. References: https://help.salesforce.com/s
/articleView?id=sf.accountteam.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.
accountteam_default.htm&type=5

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. References: https://help.salesforce.com/s/articleView?id=sf.
home_components.htm&type=5

Web-to-Case allows you to create cases from a form on your website.
References: https://help.salesforce.com/s/articleView?id=sf.customizesupport_web_to_case.htm&type=5

To make a tab hidden in the All App Launcher or visible in any app, but still allow a user to view records that would normally be found under this tab, the administrator should use Tab Settings on a profile. Tab Settings control the visibility and default behavior of tabs for each app in an org. The administrator can set a tab to Hidden, which means it will not appear in any app or in the All App Launcher, but users can still access records via other means such as search or reports. Object Permissions, App Permissions, and Org-Wide Defaults are not related to tab visibility. References: https://help.salesforce.com/s/articleView?id=sf.
customize_tabs.htm&type=5