Extreme old age when a man behaves like a fool

A. Dotage

B. Imbecility

C. Young

D. Superannuation

Answer: Option A

Solution(By Examveda Team)

One word substitute is Dotage.

Dotage: the period of life in which a person is old and weak.
Imbecility: stupid or inane behavior.
Young: having lived or existed for only a short time.
Superannuation: regular payment made into a fund by an employee towards a future pension.