The cellular clock theory holds that our cells divide A. until trapped free radicals split them apart. B. more quickly as we age, and so we die faster. C. more efficiently as we age. D. approximately...

The cellular clock theory holds that our cells divide

A. until trapped free radicals split them apart.

B. more quickly as we age, and so we die faster.

C. more efficiently as we age.

D. approximately 75–80 times before they die.