Answer:
C) exchange of dissolved gases between the blood and the interstitial fluid.
Explanation:
It's not A because that's the definition of external respiration.
It's not B because that's the definition of homeostasis.
It's not D because that binding is all part of the homeostasis.
It's not E because that's part of the metabolism of each tissue.
The right answer is C because the definition of internal respiration is the exchange of oxygen and carbon dioxide between blood and tissue through the interstitial fluid.
