## Core Concept
The timing of suture removal is crucial in preventing suture marks on the skin. Sutures are typically removed once the wound has gained sufficient strength to withstand external forces without dehiscence. The rate of wound healing and strength gain varies among individuals and depends on factors like nutritional status, age, and presence of comorbidities.

## Why the Correct Answer is Right
The correct approach to avoid suture marks is to remove sutures at the optimal time when the wound has achieved adequate tensile strength. Generally, sutures on the face can be removed within 4-5 days, on the scalp within 6-7 days, on the back within 12-14 days, and on the extremities within 10-12 days. Removing sutures too early can lead to wound dehiscence, while delaying removal can result in suture marks.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because removing sutures too early increases the risk of wound dehiscence.
- **Option B:** Similarly, this option is incorrect for the same reason as option A; timing is crucial.
- **Option C:** This option might seem plausible but is incorrect based on standard suture removal guidelines.
- **Option D:** This option is incorrect because it does not align with the standard practice for suture removal to prevent suture marks.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the timing of suture removal varies by location:
- Face: 4-5 days
- Scalp: 6-7 days
- Chest and abdomen: 7-10 days
- Back: 12-14 days
- Extremities: 10-14 days

## Correct Answer: D. 7 days.