INLAND ONLY A commercial vessel engaged in public safety activities may display a(n) identity light(s). Which of the following is appropriate for these activities?

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

33 CFR 83.34(h) authorizes commercial vessels engaged in public safety activities to display an alternately flashing red and yellow light. This specific light configuration identifies the vessel as performing official duties, alerting other mariners to exercise caution and maintain a safe distance while the vessel conducts its operations.