To identify new leads entered by interns from existing leads, the administrator should define a record type and assign it to the interns. This will allow them to select a different record type when creating leads, and distinguish them from other leads based on record type. Setting up Web-to-Lead form will not work if the interns are entering leads manually in Salesforce. Creating a separate Lead Lightning App or updating the active Lead Assignment Rules will not affect lead identification. Reference: https://help.salesforce.com/s/articleView?id=sf.customize_recordtype.htm&type=5

The mass transfer tool allows you to transfer up to 250 records at a time from one user to another user while keeping the existing team members intact. You can access this tool from Setup by entering Mass Transfer Records in the Quick Find box. Reference: https://help.salesforce.com/s/articleView?id=sf.mass_transfer_overview.htm&type=5

Opportunity contact roles allow you to track ROI for contacts that are key stakeholders for opportunities. You need to customize the contact role field and add the related list to the opportunity page layout.

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

Two functions that an administrator should use when creating a validation rule are:
Error condition formula, which defines when an error should occur based on record fields and values Error message location, which specifies where on the page layout an error message should appear when triggered by an error condition formula Formula return type and rule active date are not functions used for validation rules. Reference: https://help.salesforce.com/s/articleView?id=sf.validation_rules_overview.htm&type=5