refers to a condition that requires the occurrence of an event before a party is obligated to perform a duty under a contract.

a. Condition Precedent
b. Condition subsequent
c. Concurrent condition
d. Implied condition

Option A                      

Explanation:

A precedent situation is an incident or state of the world that is necessary before anything else happens. In property law, a precedence situation is an circumstance which will take place before payment under an agreement is overdue, that is. before any contractual obligation occurs, unless its non-occurrence is absolved. Throughout programming, a little while loop establishes the reality of a sentence as just a precedent requirement for running a specified subprogram or any other fragment of code.

counter-terrorism incorporates the practice, military tactics, techniques, and strategy that government, military, law enforcement, business, and intelligence agencies use to combat or prevent terrorism.

basically prevent, pursue, protect, and prepare, google it if you need more info

cluck cluck?   plz give me brainlest xd