INLAND ONLY Which of the following may be displayed by a commercial vessel engaged in public safety activities?

Correct Answer: Option B — alternately flashing red and yellow light

33 CFR 83.34(h) specifies that commercial vessels engaged in public safety activities may display an alternately flashing red and yellow light. This light is a distinct signal authorized for these specific operations, helping to identify the vessel's role and ensuring the safety of all traffic in the vicinity.