Answer:
Explanation:
Stretching can help improve flexibility, and, consequently, range of motion about your joints. Better flexibility may: Improve your performance in physical activities. Decrease your risk of injuries.
1. I would say D.
2. I would say C.
When they are no longer lined out with each other and based on the congruency
That is because there must be perfect equalibrium between the body. It's like the fosbury flop, which was a why of high jumping that would allow high jumpers to "cheat" physics and leave equalibrium for short periods of time. If something goes up, something else must go down, this is a general rule becuase if it isn't true you would start floating out of the water
The correct answer
Flexion
This is the movement when muscles contract reducing the angle of that joint. For instance, when ones biceps contract reducing the olecranon joints degree.