What are common symptoms of oxygen toxicity in divers?

Oxygen toxicity can occur when divers are exposed to high levels of oxygen, especially at higher pressures. Common symptoms include visual changes such as tunnel vision or blurriness, which arise from the effects that high partial pressures of oxygen can have on the retina. Muscle twitching is another symptom, often reflecting neurological effects as high oxygen levels can irritate the nervous system. Seizures may occur in more severe cases, indicating that the central nervous system is significantly affected. Confusion can also result from neurological impairment due to oxygen toxicity, as it disrupts normal brain function.

These symptoms align with the physiological impacts of elevated oxygen levels and pressure on the body, making this the correct choice. Other options listed represent symptoms associated with different conditions or scenarios unrelated to oxygen toxicity.