The section of a health policy that states the causes of eligible loss under which an insured is assumed to be disabled is the:
a probationary (waiting) period provision
b insuring clause
c incontestability clause
d consideration clause

B Insuring Clause

Explanation:

According to my research on various insurance policies, I can say that based on the information provided within the question the section being described in the question is called the Insuring Clause. Like mentioned in the question this is a provision on the first page of the policy which states the coverage and when it applies. Which in term defines that anything else other than what is states is ineligible for payment.

I hope this answered your question. If you have any more questions feel free to ask away at .