How should an ACE certified Personal Trainer BEST reduce risk associated with this exercise?

Which of the following is closest to the MAXIMUM recommendation for safe weight loss?

During the performance of the squat in the video, which muscle group is dominant in both the eccentric and
concentric phases of the exercise?

Your client is at week two of her strength-training program, and her strength has increased in all exercises,
instead of performing 12 repetitions, she is now able to complete 15 repetitions using the same load. What
physiological adaptation may explain this improvement?

A client has just completed the third week of a program designed to Increase aerobic efficiency. The total
accumulated duration of cardio respiratory exercise for the week was 180 minutes. What is the maximum
recommended duration of total exercise for week four of this client's program?