**Core Concept**
The question is testing the knowledge of the optimal dose of local anesthetics (LAs) in surgical settings. Local anesthetics work by blocking sodium channels, thereby preventing the transmission of nerve impulses. In surgical settings, the goal is to achieve adequate anesthesia with minimal side effects.

**Why the Correct Answer is Right**
The correct dose of LA depends on various factors, including the type of surgery, patient's weight, and the specific LA used. Generally, for minor surgical procedures, a dose of 1-2 mg/kg of lidocaine or 1-1.5 mg/kg of bupivacaine is sufficient. For more extensive surgeries, higher doses may be required, but exceeding a certain threshold can lead to systemic toxicity. The optimal dose should be carefully calculated to achieve adequate anesthesia while minimizing the risk of toxicity.

**Why Each Wrong Option is Incorrect**
**Option A:** This option might be a distractor as it could be a lower dose, potentially leading to inadequate anesthesia. However, without knowing the actual dose, it's hard to say for sure.

**Option B:** This option might be a higher dose, which could increase the risk of systemic toxicity, including seizures and cardiovascular collapse.

**Option C:** This option might be a distractor as it could be a dose that is not commonly used or is not supported by evidence.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the dose of LA should be carefully calculated to avoid systemic toxicity. A commonly used rule of thumb is to use a maximum dose of 7 mg/kg of lidocaine or 2.5 mg/kg of bupivacaine.

**Correct Answer: C. 3-4 mg/kg of lidocaine.**