**Core Concept**
Vitamin C plays a crucial role in wound healing by facilitating collagen synthesis and enhancing the production of growth factors. However, certain vitamins can have inhibitory effects on wound healing, particularly those that interfere with the synthesis of collagen or the production of growth factors.

**Why the Correct Answer is Right**
The correct answer is Vitamin K. Vitamin K inhibits wound healing by interfering with the activity of vitamin C-dependent enzymes, such as prolyl hydroxylase, which are essential for the synthesis of collagen. This interference disrupts the normal wound healing process, leading to delayed or impaired healing.

**Why Each Wrong Option is Incorrect**
**Option A:** Vitamin A is actually involved in the regulation of collagen synthesis and is often used to promote wound healing.
**Option B:** Vitamin E has antioxidant properties that can help protect wounds from oxidative damage and promote healing.
**Option C:** Vitamin D is essential for the regulation of calcium and phosphate metabolism, but it does not have a direct inhibitory effect on wound healing.

**Clinical Pearl / High-Yield Fact**
Vitamin K is often used as an anticoagulant in patients at risk of bleeding, but it can also have unintended consequences on wound healing. This highlights the importance of carefully considering the potential interactions between medications and the body's natural processes.

**Correct Answer:** D. Vitamin K.