Which type of contracts is dependent on uncertain future events?

The correct answer is contingent contracts, as this type of contract specifically relies on the occurrence of uncertain future events to determine its validity or enforceability. A contingent contract is characterized by conditions that must be fulfilled before the contractual obligations take effect. For example, if a party agrees to pay for a house only if they receive financing, that commitment is contingent on the uncertain event of getting a loan.

In contrast, quasi contracts are not based on any formal agreement but are established by law to prevent unjust enrichment. Valid contracts are those that meet all the legal requirements for enforceability and do not depend on the occurrence of an uncertain event. Performance contracts typically specify certain tasks or actions that must be completed but do not hinge on an uncertain future event, making them distinct from contingent contracts.