Question

Divers instinctively prevent serious damage to arms and legs by pulling them in close to the body during a dive. Which two organ systems work together to accomplish this?
A. muscular and digestive systems
B. circulatory and nervous systems
C. nervous and muscular systems
D. digestive and circulatory systems

Answer 1

C. Instinctively implies Nervous system. Pulling close involves Muscular systems :D

Answer 2

Thanks @Ryaan

Answer 3

Noooo probooo! :3

Answer 4

:P