Those diagnosed with an intellectual disability score approximately 70 or below on an intelligence test and also demonstrate a limitation

This question is comes related to the following options:

A. intrinsic motivation.

B. hybrid vigor.

C. physical health.

D. adaptive behavior

Intelligence tests are designed to calculate or assess various mental functions, including comprehension, reasoning, judgment, social skills, independence amid others; people with such low rate scores usually have a hard time living by themselves in society,  they lack social competence, which is also known as "Adaptive Behavior".

Thereby the answer is D).