Which of the following contracts has no legal effect and typically involves an illegal act, fraud, misrepresentation, duress, or undue influence?

A valid contract is one that meets all legal requirements and is enforceable in a court of law. It typically includes an offer, acceptance, consideration, and mutual consent. Unlike void contracts, valid contracts have legal effect and can be upheld by the courts.

An oral contract, while it can be enforceable, is not inherently void. It refers to agreements made verbally rather than in writing. As long as the essential elements of a contract are present, an oral contract can be valid and carry legal effect, unlike a void contract which lacks enforceability.

An implied contract is formed by the actions or conduct of the parties involved rather than through explicit verbal or written agreements. It is recognized by law and can be enforceable, depending on the circumstances. In contrast to void contracts, implied contracts do have legal standing.