Which answer below is a support and movement structure that is maintained by water or body fluid? exoskeleton endoskeleton chitin hydroskeleton

Option D, hydroskeleton

Explanation:

The hydro skeleton is structure which is commonly found in the animals that have soft body with fluid filled cavity. This fluid in the cavity exerts pressure on the surrounding muscles which help an organism to change its body shape or move. These organism generally move by contracting and expanding their body . Some example of animals possessing hydrostatic or hydroskeleton are star fish, earthworms etc.

the answer to this question is a

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity