Extreme old age when a man behaves like a fool
Answer: Option C
Solution(By Examveda Team)One word substitution is Dotage.
Imbecility: stupid or insane behaviour.
Youth: the period between childhood and adult age.
Dotage: the period of life in which a person is old and weak.
Superannuation: regular payment made into a fund by an employee towards a future pension.
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