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What is the average pH level of the skin?

  1. 4.5-5.5

  2. 6.5-7.5

  3. 7-8

  4. 3-4

The correct answer is: 4.5-5.5

The average pH level of the skin is typically between 4.5-5.5, which falls under the acidic range. This is important for maintaining a healthy balance of bacteria and preventing harmful bacteria from growing on the skin. Option B is incorrect because it falls under the neutral range, which is not the average pH level of the skin. Option C is incorrect because it falls under the alkaline range, which is too high for the average pH level of the skin. Option D is incorrect because it falls under the very acidic range, which is too low for the average pH level of the skin. It's important to keep in mind that individual pH levels can vary, but the average falls within the range of 4.5-5.5.