An aleatory contract is characterized by which of the following features?

An aleatory contract is indeed characterized by the feature of an unequal exchange of value. In such contracts, the outcomes are contingent upon uncertain events, meaning that the benefits received by each party are not necessarily equal. For example, in crop insurance, the insurer may collect premiums from the insured party, but the payout may occur only if specific conditions are met, such as crop loss due to a natural disaster. This creates a scenario where one party may gain significantly more than the other based on those uncertain events.

The other options describe different attributes that do not align with the definition of an aleatory contract. "All parties must benefit equally," for instance, does not fit because aleatory contracts are rooted in the unpredictability and imbalance of benefits. Similarly, strict adherence to contract terms does not capture the inherent flexibility often seen in contracts that depend on chance occurrences. Lastly, the requirement for annual renegotiation is irrelevant to the concept of aleatory contracts, as many such agreements do not necessitate regular re-evaluation; they simply continue until the insured event occurs or the contract is otherwise completed or terminated.