I know its not much so I'd have to say it is C. 25
The correct matching are as follows:
A. PENINSULA: Has water on three sides.
A peninsula refers to a piece of land that is surrounded by water on three sides.
B. CAPE: Is small extension of land.
A cape refers to a piece of narrow land that project into the sea.
C. STRAIT: Joins two waterways.
A strait is a narrow stretch of water that joins two larger bodies of water together.
D. BAY: An indentation of shore.
A bay refers to an indentation of a shoreline, which is larger that a cove but is smaller than a gulf.