Answer:
an implicit rule
Explanation:
An implicit rule or idea is the general communication or understanding by the people which is not directly stated or conveyed but is understood by the moral conscience.
It is not directly stated or said but is understood by civic sense.
Thus people who understands that they have to form a line and wait for their turn is an example of an implicit rule.
They were forced to leave their homes and travel to an assigned Reservation. This was know as the Indian Removal Act.
An imperative sentence is a command that can end with an exclamation point (!) or a period (.).
Sentence A and D are declarative sentences, which is a statement that tells facts. Sentence B is an interrogative sentence, which is a sentence that asks a question. Sentence C on the other hand is a command, telling Tim to hand the orange juice.
So your answer is C.