D is the only non fragment sentence here, so it must be correct
Answer:
Generally, when not engaged in combat, soldiers in the Continental Army served three duties: fatigue or manual labor, such as digging vaults (latrines), clearing fields, or erecting fortifications. They also served on guard duty and drilled daily with their musket and in marching formations.
The Revolutionary War split the people of the American colonies into two groups: the loyalists and the patriots.
Explanation:
The human species first appeared in Africa... The first settlements, however, were in the middle east
