Answer:
Consider the energy budgets for a human, an elephant, a penguin, a mouse, and a snake. The mouse would have the highest total annual energy expenditure, and the elephant would have the highest energy expenditure per unit mass.
\ra) elephant; mouse
\rb) elephant; human
\rc) penguin; mouse
\rd) mouse; snake
\re) human; penguin
Explanation:
the mice demand more energy expenditure than the rest of the animals since they have a much more hectic life routine, while the elephant is one of the heaviest animals and with a much more sedentary or calm life than the mouse.