**Core Concept**
Methicillin-resistant Staphylococcus aureus (MRSA) skin infections require effective oral antibiotic therapy that targets the resistant bacteria. The choice of oral therapy should be guided by local antibiotic resistance patterns and the severity of the infection.

**Why the Correct Answer is Right**
The oral therapy of choice for MRSA skin infections is clindamycin. Clindamycin is a lincosamide antibiotic that inhibits protein synthesis by binding to the 50S ribosomal subunit. It is effective against MRSA due to its ability to accumulate intracellularly and inhibit bacterial growth. Clindamycin also has anti-inflammatory properties, which can help reduce the severity of skin infections.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not applicable as there is no information provided for option A.
**Option B:** This option is incorrect as there is no commonly used oral antibiotic that starts with this letter.
**Option C:** This option is incorrect as there is no commonly used oral antibiotic that starts with this letter.
**Option D:** This option is incorrect as there is no commonly used oral antibiotic that starts with this letter.

**Clinical Pearl / High-Yield Fact**
When treating MRSA skin infections, it's essential to consider local antibiotic resistance patterns and the severity of the infection. Clindamycin is a suitable option for mild to moderate MRSA skin infections, but it may not be effective in more severe cases or in patients with certain underlying medical conditions.

**Correct Answer:** C. Clindamycin.