What is the difference between institutions and organizations?

The difference between organisation and institution is that organisation is (organization) while institution is an established organisation, especially one dedicated to education, public service, culture or the care of the destitute, poor.The institution may be school, hospital.

Explanation:

the answer is not b, and i don't think its a, so i choose either man's identity is found within the traditions of his ancestors   or language is a powerful tool, tell me if i was wrong or right by the way

black citizens were denied access to the same public facilities as whitesun.

marriages between white and nonwhite citizens were forbidden.

nonwhite citizens were required to carry identification papers with them at all times.