**Core Concept**
The CEAP classification is a widely used system for categorizing chronic venous disorders based on clinical and etiological aspects. This classification helps in assessing the severity and progression of venous ulcers. In the CEAP classification, venous ulcers are categorized based on their clinical appearance and the underlying venous disease.

**Why the Correct Answer is Right**
A healed venous ulcer typically shows signs of fibrosis and scarring, indicating that the ulcer has healed. The CEAP classification categorizes healed ulcers as "C" (clinical classification), which represents healed venous ulcers with or without signs of active venous disease. This classification is essential for assessing the effectiveness of treatment and the risk of recurrence.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately represent the CEAP classification for healed venous ulcers.
**Option B:** This option is incorrect because it is not a valid category in the CEAP classification for healed venous ulcers.
**Option D:** This option is incorrect because it represents active venous ulcers, not healed ulcers.

**Clinical Pearl / High-Yield Fact**
The CEAP classification is a crucial tool for venous ulcer management, as it helps in assessing the severity and progression of the disease. It is essential to accurately categorize venous ulcers to develop an effective treatment plan and to predict the risk of recurrence.

**Correct Answer: C. Healed venous ulcer with or without signs of active venous disease.**