**Core Concept**
The underlying principle being tested is tetanus prophylaxis in a patient with a clean wound. Tetanus prophylaxis is crucial to prevent **tetanus infection**, caused by the bacterium *Clostridium tetani*.

**Why the Correct Answer is Right**
Since the patient received his last **tetanus toxoid (TT) vaccination** 10 years ago, a booster dose is recommended to maintain immunity. For clean wounds, a booster dose is given if the last dose was more than 10 years ago.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not provide adequate information.
**Option B:** This option is incorrect as it is not relevant to the given scenario.
**Option C:** This option is incorrect because it does not apply to the clean wound without laceration.
**Option D:** This is likely the correct answer as it advises a booster dose.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that for clean wounds, tetanus prophylaxis depends on the patient's vaccination history. A booster dose is recommended if the last dose was more than 10 years ago.

**Correct Answer:** D. Tetanus toxoid booster