I believe that would be C. Academic
Hope it helps!
The ideal length of time for a cool down after an intense workout is about 3-5 minutes.
Organs I guess.
(Sorry if Im not helping)
I believe 1 would be both A and B.
I believe 2 would be B.
I believe 3 would be A.
I believe 4 would be B. Sorry if they are wrong and I hope this helps ;}