Kay, an art collector, promised hammer, an art student, that if hammer could obtain certain rare artifacts within two weeks, kay would pay for hammer's postgraduate education. at considerable effort and expense, hammer obtained the specified artifacts within the two-week period. when hammer requested payment, kay refused. kay claimed that there was no consideration for the promise. hammer would prevail against kay based on:

   Unilateral contract

Explanation:  Also known as a one-sided contract, when one party called the offeror in this case, Kay, promises something in the form of a money or some good, in exchange for some act or good. The other person in this case, Hammer, who is to reciprocate by some act or good (obtain rare artifacts) as an exchange to the one who made the promise, is called offeree.

i'll just take the points xd

either wyoming or idaho