Which statement about the hydration relationship among skin types is supported by the material?

• A. Oily and combination skin have similar hydration levels
• B. Dry skin is the same as oily skin
• C. Normal skin has the highest hydration
• D. Aging skin has the least hydration

Answer: (B)

Hydration is about the water content in the outer skin layer, not how much oil the skin produces. The material suggests that hydration levels can be similar across different skin types, so dry skin can have roughly the same water content as oily skin when properly hydrated. The difference with dry skin is often due to barrier lipids and how much water is lost, rather than inherently lower hydration. So saying that dry skin is the same as oily skin in terms of hydration fits the idea that water content can be similar across skin types, regardless of oiliness.