Question

a junction buoy is a ________.
mid-channel buoy
buoy that indicates the preferred channel
can buoy
nun buoy

Explanation:

Junction buoys (also called preferred - channel buoys) are used to indicate the preferred channel at a junction of waterways. Mid - channel buoys mark the middle of a channel, can buoys and nun buoys are types of lateral buoys (can buoys are green, cylindrical and mark the port side of a channel; nun buoys are red, conical and mark the starboard side), so the correct answer is the one that says it indicates the preferred channel.

Answer:

B. Buoy that indicates the preferred channel