How do typical human body temperature and pH explain why lactase can work efficiently in the human body of most humans?

Lactase requires 6 pH and 37 degree Celsius temperature.

Explanation:

Lactase can work efficiently in the human body of most humans because the pH and temperature of the body is favorable for the lactase to work. Lactase has a range of pH from 2 to 7 but work best at the pH 6 and at the temperature of 37 degree Celsius which is the human body temperature and pH so that's why the lactase can work efficiently and effectively in the human body.

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the answer would be   10%