Answer: The integumentary system helps the immune system by The skin acts as a barrier to keep out pathogens (B)
Explanation:
It's good for you to exercise, no matter the duration. Most children in today's world are attached to their phones like a leech to an open wound. If you sit down for long periods of time without exercising, you are neglecting your health and body.
Hope this helps!
The answer in my opinion would probably be B, because it gives a statement where most adults do believe and all the other answers sound dumb