A modification provision states that a contract may not be modified unless...

• A. Modification can be oral and signed by one party
• B. Written and signed by both parties
• C. Only in writing by one party
• D. Requires court approval

Answer: (B)

Contracts often include a no-oral-modification idea that controls how changes are made. When a modification provision requires that any change to the agreement be in writing and signed by both parties, it ensures that any adjustment is intentional, mutually agreed, and formally documented.

That’s why this is the best answer: it prevents informal, unilateral, or unclear changes that could lead to disputes later. By requiring both parties to sign a written modification, the contract protects everyone’s interests and keeps a clear record of what was actually agreed.

The other possibilities would allow changes without both parties’ written agreement or would push the change into court, which would undermine the stability and clarity that a modification clause is meant to provide. In practice, this written-and-signed requirement is the mechanism that keeps modifications legitimate and enforceable.