In case of low altitude and decompression, what commonly occurs due to dissolved nitrogen?

The correct answer highlights that the formation of bubbles in the blood is a common physiological response to low altitude and decompression. When an individual experiences a rapid decrease in atmospheric pressure, such as after ascending quickly from a deep dive, nitrogen that was previously dissolved in the body's tissues and bloodstream becomes less soluble. This decrease in pressure causes nitrogen to come out of solution and form gas bubbles.

This process is similar to what happens in decompression sickness, often referred to as "the bends," where nitrogen bubbles can block blood vessels and cause pain or more severe complications. Understanding this phenomenon is crucial for pilots, as it underscores the importance of gradual ascent and descent, especially after exposure to different pressures, such as in flying or diving activities, to prevent these dangerous effects.

Other responses may relate to physiological processes, but they do not accurately describe the immediate result of nitrogen coming out of solution due to rapid changes in pressure during decompression situations.