**Core Concept**
Absolute alcohol, also known as anhydrous ethanol, is a pharmaceutical-grade alcohol that contains 99.5% or more ethanol by volume. This high concentration of ethanol is essential for various medical and industrial applications.

**Why the Correct Answer is Right**
Absolute alcohol is used as a solvent, disinfectant, and preservative in medical and pharmaceutical settings. Its high concentration of ethanol makes it more effective for these purposes compared to lower concentrations found in beverages. The ethanol content in absolute alcohol helps to denature proteins, disrupt cell membranes, and inhibit the growth of microorganisms.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify the correct percentage of ethanol in absolute alcohol.
**Option B:** This option is incorrect as it implies a lower concentration of ethanol than what is actually found in absolute alcohol.
**Option C:** This option is incorrect as it does not accurately represent the ethanol content in absolute alcohol.

**Clinical Pearl / High-Yield Fact**
It is essential to handle absolute alcohol with caution, as it can cause severe burns and irritation to the skin and eyes. Medical professionals should always wear protective gloves and eyewear when handling absolute alcohol.

**Correct Answer: C. 95%**