Which type of fact could influence someone's decision to enter into a legally binding contract?

The correct choice is material fact because it refers to information that is significant to the decision-making process of the parties involved in a contract. A material fact is one that would influence a reasonable person's decision regarding whether to enter into a legally binding contract or not.

In the context of contracts, material facts can include aspects such as the quality of the goods or services being offered, the financial stability of the parties, or certain representations made regarding the terms of the agreement. If a material fact is misrepresented or omitted, it can lead to legal consequences and potentially render the contract voidable.

Incidental facts do not typically hold the same weight in influencing a party's decision to enter into a contract; they may be interesting or relevant but are not essential to the terms of the contract. Minor facts may pertain to inconsequential details that do not affect the overall agreement. Secondary facts are often seen as supportive or supplementary to the primary material facts and do not have the same direct influence on the decision-making process regarding a contract.