Which of the following is a potential consequence for workers breathing oxygen deficient air?

Breathing oxygen-deficient air can lead to various physical reactions due to insufficient oxygen levels available to the body. One significant consequence is fatigue, which occurs because the body struggles to obtain the necessary oxygen to function optimally. When the brain and muscles do not receive adequate oxygen, performance decreases, resulting in exhaustion and a lack of energy. This can severely impact a worker's ability to perform tasks efficiently and safely, potentially leading to accidents or errors in judgment.

While other symptoms like headaches can occur in oxygen-deficient environments, fatigue is a more direct consequence that highlights the lack of enough oxygen for sustained activity. Fever and skin rash are not typically associated with oxygen deficiency; they point to other medical conditions or reactions that would not directly result from the immediate effects of atmospheric oxygen levels on the body.