**Calculation of Cardiac Output:**

Cardiac output is the amount of blood pumped by the heart per minute. It is calculated by multiplying the stroke volume (the amount of blood pumped with each heartbeat) by the heart rate (number of heartbeats per minute).

Given:
- Cardiac output = 5 liters per minute (5000 ml/min)
- Heart rate = 18 beats per minute

To find the stroke volume, we can divide the cardiac output by the heart rate:

Stroke volume = Cardiac output / Heart rate
Stroke volume = 5000 ml/min / 18 beats/min

**Calculation of Stroke Volume:**

The stroke volume is the amount of blood pumped with each heartbeat. To calculate the stroke volume, we need to divide the cardiac output by the heart rate.

Stroke volume = 5000 ml/min / 18 beats/min
Stroke volume ≈ 277.78 ml/beat

**Calculation of Amount of Blood Oxygenated in Lungs:**

The amount of blood that will be oxygenated in the lungs per minute depends on the stroke volume and the amount of oxygen that can be carried by each milliliter of blood.

Given:
- Stroke volume = 277.78 ml/beat

To calculate the amount of blood oxygenated in the lungs per minute, we need to multiply the stroke volume by the amount of blood oxygenated per milliliter.

Amount of blood oxygenated in lungs per minute = Stroke volume * Amount of blood oxygenated per milliliter

The amount of blood oxygenated per milliliter depends on the oxygen-carrying capacity of hemoglobin and the oxygen saturation level. On average, hemoglobin can carry about 1.34 ml of oxygen per gram. Since the oxygen saturation level is not provided, let's assume it is 100%.

Amount of blood oxygenated per milliliter ≈ 1.34 ml/g * 1 g/ml * 100% = 1.34 ml

Amount of blood oxygenated in lungs per minute = 277.78 ml/beat * 1.34 ml/beat
Amount of blood oxygenated in lungs per minute ≈ 372.23 ml/min

Therefore, the amount of blood that will be oxygenated in the lungs per minute is approximately 372.23 ml/min.

So, none of the given options (5000 ml, 4900 ml, 70 ml, or 9000 ml) are correct.

9000