Under the IALA-B Buoyage System, a buoy displaying a red light will __________.

Correct Answer: Option C — be left to starboard when entering from seaward

IALA-B guidelines specify that red buoys displaying red lights mark the starboard side of the channel when entering from seaward. Navigators must observe the standard 'Red, Right, Returning' rule to ensure safe passage within marked navigable waterways.