The insurance principle that requires full disclosure of information on the insured is known as

The insurance principle that requires full disclosure of information on the insured is known as "uberrimae fidei". This means that the insured is required to disclose all material facts about the risk they want to insure to the insurer. This principle is also known as the principle of utmost good faith. It ensures that the insurer has all the necessary information to make an informed decision on the level of risk involved in insuring the policy, which can help determine the premium paid by the insured. If the insured fails to disclose any material facts, the insurer may void the policy, which means that they will not pay any claims.