Which of the following symptoms may arise from hypoxia?

Hypoxia, which is a condition characterized by an inadequate supply of oxygen to the body's tissues, can cause a variety of symptoms, one of which is agitation. When the body experiences low oxygen levels, the brain can react in a number of ways. Agitation can occur due to the brain's response to stress and anxiety brought about by insufficient oxygen. Individuals may become restless or irritable as their body struggles to cope with the lack of oxygen, which can lead to increased anxiety levels.

Agitation is particularly relevant to hypoxia as the brain is highly sensitive to oxygen levels, and any deficiency can result in altered mental states. This is one of the more immediate and noticeable symptoms as the body attempts to signal distress and the need for increased oxygen intake.

While loss of appetite, excessive sweating, and chest pain can all occur in various medical conditions, they are not as directly tied to hypoxia as agitation. These symptoms might arise due to other factors or stressors but do not specifically indicate hypoxia's immediate effects on cognitive and physical function, making agitation the most appropriate answer in this context.