Implied contracts are primarily based on what factors?

Implied contracts arise from the actions, behaviors, and circumstances surrounding the parties involved rather than from explicit agreements or written documentation. This form of contract is established when the conduct of the parties indicates that they have reached an agreement, even if no formal words or written record exists to confirm that agreement.

For instance, when someone orders a meal at a restaurant and consumes it, there is an implied contract that the customer agrees to pay for that meal, even though no explicit agreement stating the price was made at the time of ordering. The expectation created by the actions of both parties (ordering and delivering) establishes the basis for the implied contract.

The other options focus on forms of direct communication (written documentation and oral agreements) or established norms (standardized business practices) that may not effectively capture the essence of an implied contract. Implied contracts rely on the understanding and assumptions formed through behavior, which sets them apart from contracts that are expressed in written or oral form.