The meeting was adjourned after discussing on the matter for about two hours.

Answer: Option A

Postponed : cause or arrange for (something) to take place at a time later than that first scheduled.
Stopped : (of an event, action, or process) come to an end; cease to happen.
Begun : perform or undergo the first part of (an action or activity).
Reviewed : assess (something) formally with the intention of instituting change if necessary.
Adjourned : put off or postpone (a resolution or sentence).

Synonym of Adjourned is Postponed