Which term describes extreme tiredness or lack of energy?

• A. Fatigue
• B. Flushed
• C. Etiology
• D. Expansion

Answer: (A)

Extreme tiredness or lack of energy is described by fatigue. Fatigue is a common symptom that reflects a reduced level of energy or motivation and can come from many causes like illness, sleep deprivation, or stress. It’s clearly about how tired someone feels, not about appearance, causes, or changes in size. Flushed refers to facial redness from increased blood flow; etiology means the cause of a disease; expansion means growth or enlargement. So fatigue is the term that best fits the idea of being extremely tired or low on energy.