15. Which of the following best states the central idea of the passage?
(A) The disadvantage of a low oxidative metabolic rate in large animals can beoffset by their ability to convert substantial amounts of glycogen intoenergy.
(B) The most significant problem facing animals that have used anaerobicglycolysis for energy is the resynthesis of its by-product, glucose, intoglycogen.
(C) The benefits to animals of anaerobic glycolysis are offset by the profoundcosts that must be paid.
(D) The major factor ensuring that a large animal will triumph over a smalleranimal is the large animal’s ability to produce energy via anaerobicglycolysis.
(E) The great differences that exist in metabolic rates between species of smallanimals and species of large animals can have important effects on thepatterns of their activities.