Question

Arm circles are an effective dynamic stretch for swimmers because they raise blood pressure and improve muscle stamina lower body temperature for a higher intensity workout copy the movements performed during the activity expose the muscles to a different range of motion

Answer 1

Arm circles are an effective dynamic stretch for swimmers because they "copy the movements performed during the activity" although of course not exactly. 

Answer 2

Answer : Option C) copy the movements performed during the activity.

Explanation : Arm circles are an effective dynamic stretch for swimmers because they copy the movements performed during the activity.

During swimming when the arm circles are performed it stretches the triceps brachii, loosens the shoulder blade and stretches the side muscles.

Often many people are observed to perform this arm circles stretch without bringing the elbow behind the head, but especially for swimmers, this increases the stretching length and reduces stress while swimming.