What is true of bebop?
a.
it featured frequent chord changes
b.
it was meant to be danced to
c.
it was one of the slower forms of jazz
d.
all of the above

a

explanation:

true. the definition explains it: a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc. this is a dictionary definition that i have looked up in a dictionary.

i think the answer is restaurants offering only dinner