Some lights used as aids to marine navigation have a red sector to indicate a danger area. How are the limits of a colored sector of light listed in the Light List?

Correct Answer: Option B — True bearings as observed from a vessel toward the light

The USCG Light List defines sector limits by true bearings as observed from a vessel toward the light. This convention ensures that mariners can plot the bearing lines directly on their charts to identify the transition between white and colored sectors, which signify safe water versus potential hazards.