Consideration must move at the desire of a. promisor.

Explanation:

Consideration is an essential element in the formation of a contract. It refers to something of value given by each party to the contract, which induces them to enter into the agreement. In other words, consideration is what each party receives or expects to receive in exchange for their promise.

The general rule is that consideration must move at the desire of the promisor. This means that the promisor must have a desire or intention to be bound by the promise and provide consideration in return. Consideration cannot be forced or imposed upon the promisor; it must be given voluntarily.

Consideration from the promisee:

Consideration can be in the form of an act, forbearance, or a promise to do or refrain from doing something. The promisee is the party who receives the promise and provides consideration in return. The promisee's consideration can be anything of value, such as money, goods, services, or even a promise to do something.

Consideration from any other person:

In certain situations, consideration can also be provided by a third party who is not directly involved in the contract. This is known as "consideration from any other person." However, for such consideration to be valid, the third party must have a direct interest in the contract or a close relationship with one of the contracting parties.

Consideration from any of these:

Consideration can come from the promisor, promisee, or any other person as long as it meets the requirement of being something of value given in exchange for a promise. Therefore, the correct answer is d. any of these.

Conclusion:

Consideration is an essential element in the formation of a contract. It must move at the desire of the promisor, meaning that the promisor must have the intention to be bound by the promise and provide consideration voluntarily. Consideration can come from the promisor, promisee, or any other person who has a direct interest in the contract.

A.promisor