Which symptom can indicate hypoxia?

The indication of hypoxia, which is a deficiency in the amount of oxygen reaching the tissues, is often characterized by symptoms such as fatigue and confusion. When the body does not receive enough oxygen, it can lead to impaired brain function, resulting in confusion and cognitive disturbances. Additionally, the reduced availability of oxygen to muscle tissues can cause fatigue, as the body struggles to perform even basic tasks efficiently.

In contrast, the other options provided do not align with the typical physiological responses to hypoxia. Loss of appetite is a more general symptom that could stem from various conditions and is not specifically indicative of oxygen deficiency. Increased energy is contrary to what one would expect in a hypoxic state, as the lack of oxygen typically leads to lethargy, not heightened energy levels. Enhanced coordination also does not correlate with hypoxia, since oxygen deprivation can impair motor functions and coordination rather than improve them.