In 1587, the roanoke colony was built a. on an island off the coast of north carolina. b. on the chesapeake bay coast. c. on the atlantic coast of virginia. d. inland on a river off of the chesapeake bay.

The correct answer is A. On an island off the coast of North Carolina

Explanation:

The Roanoke colony was considered as one for the first colonies English people tried to create in North America, this was established in 1585 in an island off the coast of North Carolina which is know part of Dare County; however, this colony had little success as due to the bad relationship between Native people and settlers, settlers had to return to England little time later which made this colony be named as the "Lost  Colony". Therefore,  the Roanoke colony was built on an island off the coast of North Carolina.

answer; i do believe that the answer is (c) electrolyte imbalance or (d) cessation of menstrual cycle; plz check first good luck