Explanation: The Path feature that should be used to add onboarding value for the sales representatives is the Key fields component. The Key fields component allows the admin to specify up to five fields that are important or required for each stage of the Path. The sales reps can see and edit these fields directly from the Path, without scrolling through the record page. This helps to guide the reps on what information they need to gather or update at each stage, and ensures data quality and completeness. The Key fields component can also be used to enforce validation rules or required fields, by preventing the reps from moving to the next stage until they fill out the necessary fields.