The committee insisted on a total check on all social evils and he was the one who heralded the revolution.

A. Harbinger

B. Apostate

C. Renegade

D. Apostle

Answer: Option A

Solution(By Examveda Team)

One word substitute is Harbinger.

Harbinger: a person or thing that announces or signals the approach of another.
Apostate: a person who renounces a religious or political belief or principle.
Renegade: a person who deserts and betrays an organization, country, or set of principles.
Apostle: each of the twelve chief disciples of Jesus Christ.