All of the Following Are Adaptations Against Excessive Water and Salt

Multiple Choice

All of the following are adaptations against excessive water and salt exchange between animals and their surrounding environment except:

A) having very permeable tissues.
B) covering body with mucus.
C) living inside a tube that can be isolated from the external environment.
D) covering the body with a hard exoskeleton.
E) actively absorbing salt ions with gills.