Symptoms of nitrogen narcosis in divers can be likened to what?

Nitrogen narcosis is a condition that can occur in divers due to an increase in nitrogen levels in the bloodstream at greater depths. As divers descend, the partial pressure of nitrogen increases, leading to effects that can impair cognitive functions and motor skills. These effects are often similar to those experienced with alcohol intoxication, which is why B is the correct choice.

Just like alcohol, nitrogen narcosis can cause a sense of euphoria, decreased ability to think clearly, impaired judgment, and diminished coordination. This is particularly concerning for divers, as the effects can lead to poor decision-making in an environment where critical thinking and physical coordination are essential for safety.

The other options, while they may represent various psychological or physiological experiences, do not accurately reflect the specific symptoms associated with nitrogen narcosis. For example, fear of heights relates to a specific phobia and does not encompass the cognitive impairment of narcosis. Panic attacks are intense episodes of fear and anxiety, which don't mirror the altered state of consciousness caused by nitrogen narcosis. Fatigue implies a tiredness that isn’t directly related to the mental effects of nitrogen buildup. Understanding these distinct characteristics can help divers better recognize and manage the risks associated with diving at greater depths.