Tasks and Events are both part of the Activity object, but they often require different picklist values for the standard Subject field. To achieve this, the Platform Administrator must manage the picklist values for the Subject field specifically for each record type or activity type. In the Object Manager, under the Activity object (or Task/Event objects individually in some setups), the admin should edit the Subject field. Because Task and Event are distinct entities with their own picklist value sets for the Subject field, the admin can add " Schedule Site Visit " and " Send Contract " to the Task Subject list and " Site Visit " and " Ride Along " to the Event Subject list. This ensures that when a user creates a Task, they only see task-related subjects, and when they create an Event, they see event-related subjects. Option D is incorrect because it would mix all values together, causing confusion for the users. Option A (Predefined Field Values) is used to set a single default value for a field when an action is clicked, but it does not manage the available list of options in a picklist.