BOTH INTERNATIONAL & INLAND A "flashing light", by the definition given in the rules, is a light that __________.

Correct Answer: Option B — flashes at regular intervals at a frequency of 120 flashes or more per minute

Under Inland Navigation Rules, for the condition where 'A "flashing light", by the definition given in the rules, is a light that', the correct requirement is: 'flashes at regular intervals at a frequency of 120 flashes or more per minute'. This standard ensures clear navigational intent and collision avoidance.