Which term refers to oral or written statements made to the best of one's knowledge and belief?

The correct term that refers to oral or written statements made to the best of one's knowledge and belief is "representations." In the context of insurance, representations are assertions made by the applicant regarding their health, lifestyle, and other relevant factors when applying for coverage. These statements are significant because they help the insurer assess risk and determine the terms of the policy.

Representations are expected to be truthful and accurate; however, they do not require absolute certainty or perfection in the information provided. It is understood that applicants may not know everything about their health or circumstances, hence the emphasis on best knowledge and belief.

In contrast, concealment refers to the failure to disclose a material fact that the applicant is aware of, while misrepresentation involves providing false information or intentionally misleading statements. Disclosure typically implies an obligation to reveal certain information but does not encapsulate the aspect of belief and knowledge that representations do.