The act of violating the sanctity of church

A. Heresy

B. Desecration

C. Sacrilege

D. Blasphemy

Answer: Option C

Solution(By Examveda Team)

One word substitute is Sacrilege.

Heresy: belief or opinion contrary to orthodox religious (especially Christian) doctrine.
Desecration: the action of desecrating something.
Sacrilege: violation or misuse of what is regarded as sacred.
Blasphemy: the action or offence of speaking sacrilegiously about God or sacred things; profane talk.