Which type of turbulence is the least severe and won't significantly affect flying?

Light turbulence is characterized by slight, erratic changes in altitude and attitude of the aircraft. It is normally felt as a gentle bumpiness, and it does not significantly affect the handling of the aircraft. Pilots and passengers may notice a mild, intermittent shaking, but neither the aircraft nor the flight path is seriously impacted.

In contrast, severe turbulence can cause large, abrupt changes in altitude and attitude, which may lead to difficulty in controlling the aircraft, imposed loads that could stress the airframe, and more discomfort for passengers. Moderate turbulence affects the aircraft more noticeably than light turbulence but is still typically manageable. Extreme turbulence is extremely hazardous, capable of causing structural damage to the aircraft and significantly impacting flight safety. Therefore, light turbulence is recognized as the least severe type, making it the correct choice in this context.