Use of force or threats to get someone to agree to something:

Answer: Option A

The one word substitution is Coercion.

Conviction : a formal declaration by the verdict of a jury or the decision of a judge in a court of law that someone is guilty of a criminal offence.
Confession : a formal statement admitting that one is guilty of a crime.
Cajolement : persuade (someone) to do something by sustained coaxing or flattery.
Coercion : the action or practice of persuading someone to do something by using force or threats.