Answer:
Primary source
Explanation:
A primary source is an original document or other material that has not been changed in any way. It is a reliable first-hand account usually written at or near the time the event(s) occurred. Usually it was produced by someone with direct personal knowledge of the events that are described.
C. a token economy.
basically meaning that rewards and punishment shape behavior.
in a lot of schools teachers will give out tokens or points to students that behave so that they will show these actions more.
C. There were not enough workers to cultivate and harvest crops.
The Ghost of the Christmas present is referring to the approximately 1800 Christmases that have come and gone since the birth of Christ, culminating up to the point where the story is told.
D. An action verb expresses actions or events taking place
An action verb follows the subject and expresses an action to the predicate that follows it.
Hope this helps :)
