Describe the roles personal trainers and fitness directors fulfill at a health club. (Site 1)

Explanation:

A personal trainer is a person who will help their client with their fitness goal. Depending on the goal or the trainer in question this can be everything from making their fitness programs, planning out nutrition, and working on changing some habits.

Fitness directors usually just look over the fitness-related aspects of a gym

answer; /// i believe that the correct answer is (c) the concentration of active ingredients in a medication

70 % i think is the answer.