Answer: A. Bays
A body of water surrounded partially by land is a bay and it is usually smaller than a gulf. In the history of human settlement, bays are very significant as they helped in providing a safe place for fishing and the development of sea trade which later led to the creation of ports. Ports are built locations known to be geographically favorable and bays are always located in the most favorable locations. Generally, bays helped in the formation and development of sea trade as a result of the safe anchorage they provided.