A person has a measured BMR of 1,400 kcal/day. Estimate a plausible range for their total energy expenditure (TEE) using TEF 5–15% of TEE and activity contributing 20–35% of TEE. Provide lower and upper TEE estimates.

• A. ≈1,867 to 2,800 kcal/day
• B. ≈1,400 to 1,867 kcal/day (assuming TEE cannot exceed twice BMR)
• C. ≈1,200 to 1,600 kcal/day (assuming TEF and activity subtract energy rather than add),
• D. ≈2,800 to 3,500 kcal/day (using BMR as 100% of TEE mistakenly)

Answer: (A)