I believe the answer is a sentence.
Answer:
Explanation:
what about how long the periods are all together or how long it takes from class to class til the end of the day?
Answer:
C. adverb clause
Explanation:
The exhibition could not begin until Phineas Barnum appeared.
The keyword until, makes this an adverb clause.
I am joyous to assist you anytime.
No, because it can be in a serious sense like "They had a sunny day at the beach" but in a mocking tone like "The day was sunny, mocking me at the loss of my wife in that fire, one year ago today"
