One Theory of Aging That Makes Apparent Commonsense Postulates That

Multiple Choice

One theory of aging that makes apparent commonsense postulates that organisms have only so much energy to expend in a lifetime. Therefore, the basic idea is that the rate of a creature's metabolism is

A) variable and needs to be increased with exercise.
B) variable and needs to be monitored.
C) is fixed and cannot be changed.
D) related to how long it lives.