A[n] ________ contract is commonly defined as a promise in exchange for a promise.

A) Unilateral
B) Trilateral
C) Complete
D) Bilateral
E) Classified

Bilateral

Bilateral refers to involving two parties, typically countries or individuals, especially in agreements, treaties, or transactions where both sides have reciprocal obligations or rights.

Promise

A commitment or assurance given by one party to another that they will do or not do something in the future.