Under , colleges and universities are required to provide qualified sign language interpreters and other auxiliary aids needed to ensure effective communication opportunities for the deaf and hard of hearing student population.

Section 504 of the Rehabilitation Act of 1973 and the Americans with Disabilities Act (ADA).

Explanation:

The act provide that school should make provision for qualified sign language interpreters and other auxiliary aids needed to ensure that American living with disabilities such as deaf and hard of hearing students are effectively communicated to in order to bridge the gap between them and other students. The ADA regulations specifically address the obligation of a school board or other public entity to remove communication barriers for deaf individuals so that they will not miss out in information sharing.

National Association of the Deaf (NAD)

Explanation: National Association of the Deaf (NAD) is an organization which aims are to protect and assist with the civil rights, human rights, and linguistic rights of deaf and hearing impaired people. It has an association in all 59 states of the United States, and Washington DC. It's is a member of the world federation of the Deaf.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."

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