Answer:
d. inadequate oxygen to the tissues and cells.
Explanation:
Hypoxia is a pathological state in which the body is impoverished with adequate oxygen supply to the tissues and cells. At that state, oxygen is significantly insufficient which can pose a threat or associated with diffusion of oxygen in the lungs to carry out respiratory activities, malfunctioning of the Brain, headaches, nausea,anxiety etc.
Hypoxemia is a decrease in arterial oxygen levels.