Final answer:
The Chief of Dental Services should request a Charlie roster to obtain a list of individuals in a specific class, as it organizes information based on specific criteria.
Step-by-step explanation:
If the Chief of Dental Services (CDS) wants a list of all individuals in a specific class, they should request a Charlie roster. A Charlie roster is typically used to organize and retrieve information on individuals based on specific criteria or classifications, which makes it suitable for listing members of a particular class or category. On the other hand, an Alpha roster is usually an alphabetical list of individuals, a Bravo roster might be sorted by another criterion such as rank or assignment, and a Delta roster could be focused on a different aspect altogether, such as equipment or deployment status.