Answer:
I think its B HOPE THIS HELPS!!!!!!
Answer: Im pretty sure it would be A. in the nucleus
If im wrong srry!
I hope this helps!
Explanation:
46.875
P.E=MGH
7500=16*10*h
7500=160h
h=7500/160
h=46.875
B.Self powered
They move by themselves.Hope this answer helps you ;)