An average human being at rest inhales and exhales about 7 or 8 liters of air per minute. That totals to more than 11,000 liters of air in a day. Thus, the correct answer is option B

To find out how much air a healthy person can inhale in one breath, we need to consider the average lung capacity. The average lung capacity for a healthy adult is around 4-6 liters. Therefore, the correct answer is option B: 6 liters.
Here is a detailed explanation:
1. Lung capacity: Lung capacity refers to the maximum amount of air that can be inhaled or exhaled during a breath. It is influenced by factors such as age, sex, height, weight, and overall health.
2. Tidal volume: Tidal volume is the amount of air that is inhaled or exhaled in a normal breath. On average, a person at rest inhales and exhales about 500 milliliters (0.5 liters) of air with each breath.
3. Inspiratory reserve volume: Inspiratory reserve volume is the additional amount of air that can be inhaled after a normal breath. It is estimated to be around 3 liters.
4. Expiratory reserve volume: Expiratory reserve volume is the additional amount of air that can be exhaled after a normal breath. It is also estimated to be around 3 liters.
5. Residual volume: Residual volume is the amount of air that remains in the lungs even after a maximum exhalation. It is about 1-1.5 liters.
6. Total lung capacity: Total lung capacity is the sum of tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume. On average, it is around 4-6 liters.
7. Therefore, a healthy person can inhale up to 4-6 liters of air in one breath.
In conclusion, the correct answer is option B: 6 liters.