Final answer:
Betty White's promise to sell a puppy to Michael is met with his promise to pay $400, representing mutual consideration, which is a necessary element for a valid and enforceable contract in law.
Step-by-step explanation:
The subject of this question is whether there was consideration for Mike's promise to buy the dog from Betty White. In legal terms, consideration refers to something of value that is promised by one party to another in exchange for a response in a contractual agreement. In this scenario, the consideration from Michael (often referred to as Mike) is the promise to pay $400, and Betty White's consideration is the promise to provide a puppy. In contract law, for a contract to be valid, there must be consideration from both parties. Therefore, since both parties promised something of value to the other, there was indeed consideration on both sides, making Mike's promise enforceable, assuming no other legal defenses apply.