Answer:D.both parties to the contract agree on the contract terms
A.bargained-for exchange of value to the parties
C.parties' negotiated understanding of terms and intent that lead to the contract
B. the subject matter of the contract does not violate law or public policy
Explanation:D A C B 1.consideration
D A C B 2.mutal Acceptance
D A C B 3. Legality
D A C B 4. Agreement