Question

the colonists of roanoke may have disappeared because of... *
drought
attacks from local natives
lost at sea
all of the above

Explanation:

The Roanoke colonists' disappearance has multiple proposed theories. Drought could have caused resource shortages, attacks from local natives were a threat, and attempts to sail (leading to being lost at sea) were also possible. So all these factors are plausible explanations.

Answer:

D. all of the above