**Core Concept**
Resting total body oxygen consumption refers to the rate at which the body utilizes oxygen to produce energy under resting conditions. This process is a critical component of basal metabolic rate (BMR) and is primarily driven by the energy requirements of various organs and tissues.

**Why the Correct Answer is Right**
The correct answer is based on the concept that at rest, the body's energy requirements are mainly met by the oxidation of fatty acids and glucose. The resting energy expenditure is estimated to be approximately 100-120 mmol/min, with oxygen consumption being a direct result of the oxidative phosphorylation process. This process involves the transfer of electrons through the electron transport chain in the mitochondria, resulting in the production of ATP and the consumption of oxygen.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately represent the resting total body oxygen consumption. The value provided is not consistent with the estimated resting energy expenditure.
**Option B:** This option is incorrect as it is not a valid measure of resting total body oxygen consumption. Oxygen consumption is typically expressed in units of volume (e.g., mL/min) rather than grams.
**Option C:** This option is incorrect as it is a value that is not typically associated with resting total body oxygen consumption. The value provided is not consistent with the estimated resting energy expenditure.

**Clinical Pearl / High-Yield Fact**
A key concept to remember is that the body's energy requirements are influenced by various factors, including age, sex, and body composition. Understanding the factors that affect resting energy expenditure is essential for accurately assessing an individual's nutritional needs.

**Correct Answer: B. 200-250 mL/min**