The optimal pH of lipase (pancreas) is:

Explanation

Option C is correct. The optimal pH of lipase (pancreas) is 8.0. This is the pH at which the enzyme is most active and can most efficiently catalyze the breakdown of triglycerides into fatty acids and glycerol. The pancreas secretes lipase into the small intestine, where it helps to digest fats. Lipase is most active in the slightly alkaline environment of the small intestine, which has a pH of around 7.5-8.0. Factors such as the pH of the environment, the temperature, and the presence of bile salts can all affect the activity of lipase. For example, bile salts help to emulsify fats, making them more accessible to lipase. If the pH of the environment is too low (as in Options A and B) or too high (as in Option D), the activity of lipase will be compromised, leading to issues with fat digestion and potential symptoms such as diarrhea and steatorrhea (fatty stools).