Which of the following is an example of a unilateral contract?

A unilateral contract is defined as an agreement in which one party makes a promise in exchange for an act by another party. In this type of contract, only one party is legally bound to fulfill their promise. The offeror (the one making the promise) is obligated to perform once the offeree (the one accepting the offer) completes the requested act.

The example of a reward offer for a lost pet perfectly illustrates a unilateral contract. In this scenario, the person who lost the pet makes a promise to pay a reward if someone finds and returns the pet. The obligation of the person who made the offer to pay the reward exists only if someone takes the action of finding and returning the pet. This means the contract is not formed until the act (returning the pet) occurs.

In contrast, other options represent different types of agreements. A rental agreement typically involves mutual promises between the landlord and tenant, making it a bilateral contract. A job offer that is accepted also represents a bilateral contract, where both the employer and the candidate make mutual commitments. Lastly, a partnership agreement involves cooperation and promises from all parties involved, also categorizing it as bilateral. Therefore, the reward offer for a lost pet stands out as a clear example of a unilateral contract