How is light icing characterized in terms of its impact?

Light icing is characterized primarily by its potential to become problematic over time. While it may start out as a minor concern that is not immediately visible, even light ice accumulation can gradually affect an aircraft's performance and handling characteristics.

As ice builds up, it can alter the shape of the wings and control surfaces, reducing lift and increasing drag, which may become significant during critical phases of flight, such as takeoff and landing. Consequently, light icing can escalate from a seemingly negligible issue to a serious safety hazard if not addressed promptly. Recognizing this gradual accumulation underscores the importance of vigilance in monitoring conditions that contribute to icing, thereby making it crucial for pilots to be aware of its potential impacts.

In contrast to the other options, light icing is not characterized as always severe or immediately dangerous; those conditions typically represent more severe icing scenarios. Therefore, while light icing might not present an urgent threat at first, its longer-term implications can be significant, making option B the correct choice.