The fishing boat pulled away from the wharf and chugged smoothly down the bay.

Answer: Option C

Harbour : a place on the coast where ships may moor in shelter, especially one protected from rough water by piers, jetties, and other artificial structures.
Shore : the land along the edge of a sea, lake, or other large body of water.
Quay : a stone or metal platform lying alongside or projecting into water for loading and unloading ships.
Anchor : a heavy object attached to a cable or chain and used to moor a ship to the sea bottom, typically having a metal shank with a pair of curved, barbed flukes at one end.
Wharf : a level quayside area to which a ship may be moored to load and unload.

Synonym of Wharf is Quay