Canadian Boating Practice Exam 2025 - Free Canadian Boating Exam Practice Questions and Study Guide

A 50 to 70 flashes per minute is not the frequency for a standard flashing light. The frequency varies based on the type of light and its purpose.

C: 30 flashes per minute is too slow of a frequency for a standard flashing light. Again, the frequency can vary based on the purpose of the light.

D: 100 flashes per minute is a common frequency for many flashing lights, but it is still not considered the standard. Different lights may have different frequencies.

A standard flashing light usually has a frequency of 120 flashes or more per minute. While 100 flashes per minute is a common frequency for many flashing lights, it is not considered the standard. The frequency of a flashing light may vary based on its purpose and type, but generally it is faster than 100 flashes per minute. Therefore, B is the correct answer.