Aging Process Has Been a Matter of Interest and a Subject

Multiple Choice

aging process has been a matter of interest and a subject of research for centuries. This research has established a(n) _______.

A) empirically documented single theory of aging
B) diversity of current propositions about the aging process, most supported by some empirical evidence
C) diversity of empirical evidence, all pointing to 4 primary theories of aging
D) unified theory of aging at the cellular level