Do you still need the answer??
Answer:Hope this helps <3 p.s : I would've done an explanation but there's a lot of questions.
15) B.
16)B.
17)C.
18)C.
19)C.
20)D.
21.) C.
22)C.
23) A.
24)A.
25)D.
26)C.
27)C.
28)A.
29)D.
30)B.
Explanation:
The correct answer is endorphins.
During strenuous exercise, the brain releases the neurotransmitter called endorphins. Endorphins are known as "feel good" chemicals that produce a feeling of euphoria, reduce anxiety and the ability to experience pain. Endorphins also produce a feeling of happiness and relaxation after an intense exercise session.
a us native american I'm guessing