Using the correct safety gear, such as a helmet, a. is required only some of the time. b. is the best way to prevent injury in sports that call for such equipment. c. limits the amount of movements a person can do, thus increasing the chance for injury. d. does nothing to prevent sport-related injuries.

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.

the answer is c alcoholics anonymous