**Core Concept**
Savalon is a topical antiseptic solution. The active ingredient in Savalon is crucial for its antiseptic properties.

**Why the Correct Answer is Right**
The correct answer is related to the active ingredient in Savalon, which is used for its antimicrobial properties. This ingredient is effective against a wide range of microorganisms.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not match the known active ingredient in Savalon.
**Option B:** This option is also incorrect as it is not associated with Savalon.
**Option C:** Similarly, this option does not correspond to the active ingredient in Savalon.
**Option D:** This option is incorrect because the correct active ingredient is different.

**Clinical Pearl / High-Yield Fact**
The active ingredient in Savalon is a high-yield fact for exams, as it is commonly used in medical settings for wound care and infection prevention.

**Correct Answer:** D. Chlorhexidine