Which of the following is considered a boating stressor that can increase risks?

Glare from the sun is a significant boating stressor because it can impair vision and make it challenging to see hazards, other vessels, or even your own surroundings. When glare is strong, it can cause momentary blindness or disorientation, which increases the risk of collisions or accidents. This factor can lead to heightened anxiety and reduced ability to react quickly to changing conditions on the water, thus raising overall risk levels.

While crowded waters can also create stressful situations by increasing the potential for collisions, glare affects visibility directly and can be a more immediate danger. Technical malfunctions certainly pose risks but are not considered stressors in the same way that external environmental factors like sunlight are. Overheating is a concern for both the vessel and the crew, but its relevance as a stressor is less immediate compared to how glare impacts situational awareness on the water.