Which item on the DTS Dashboard would a travel clerk use to assist travelers with their travel documents?

Traveler Lookup, in the Quick Links drop-down menu - that is the answer the course key expects, and Traveler Lookup is indeed the tool a travel clerk uses to find travel documents belonging to other people. Note: the current DTS Guide 1 puts Traveler Lookup in the Trips drop-down menu of the Administrative Functions tool bar, not in Quick Links, and Quick Links are five shortcut tiles on the DTS Dashboard rather than a drop-down menu. The tool and who uses it have not changed: DTAs, Non-DTS Entry Agents and travel clerks use Traveler Lookup to search for documents belonging to their travelers.