Respuesta :
Certified, friendly, helpful are important characteristics for fitness center staff. As the staff of the fitness center are also the trainees of the people, so they must have a good experience.
What is the fitness center?
The Fitness Center is a health, recreational, and social center dedicated to exercise, sports, and other forms of physical activity. That could be a for-profit business or a communal or institutionally funded facility. Overall, we can state that a fitness facility is different from a gym.
Thus, option D is correct.
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