What type of contract arises from the actions and behavior of the involved parties?

The correct answer is an implied contract. This type of contract is not explicitly stated but is instead formed through the actions, behavior, or conduct of the parties involved. Implied contracts are based on the premise that the parties have intended to create a contract, allowing their behavior to suggest agreement on the terms without a formal written document.

For example, if you go to a restaurant and order a meal, it is understood that you intend to pay for that meal upon receipt, and the restaurant intends to provide it. This mutual understanding establishes an implied contract based on the actions of both parties.

In contrast, an express contract is clearly defined either orally or in writing, specifying the terms and expectations. A unilateral contract involves a promise made by one party, with the second party not having to make a promise in return; it becomes binding only when the action is performed. A bilateral contract involves mutual promises, with both parties agreeing to fulfill their respective obligations, thus forming a mutual exchange.