Answer: true
Explanation:
Because the latissimus dorsi muscle is a large, triangularly shaped back muscle that helps you do things like pull-ups, swimming and even breathing. It functions to stabilize your back while extending your shoulders.
The third one. hope this clarifies
3 Positive reinforcement is most effective when it occurs immediately after the behavior. Reinforcement should be presented enthusiastically and should occur frequently. Deliver reinforcement quickly: A shorter time between a behavior and positive reinforcement makes a stronger connection between the two
Im just some random dude so i think its maybe assisting them