The increase in death rates among older people after they reach a life milestone such as a birthday provides evidence of A) the accumulation of antibodies. B) a death-deferral phenomenon. C) shortened telomeres. D) terminal decline

The answer is a

The increase in death rates among older people after the reach a life milestone such as a birthday provides evidence of shortened telomeres.

Explanation:

The process of ageing depends on the shortening of telomeres. The telomeres keep getting shorter and shorter through the course of life as the cells involve themselves in the process of copying and re-copying. The telomeres make it possible for the cells to copy themselves without sticking to each other as they form the ends of the chromosomes.