**Core Concept**
Antibiotic resistance in bacteria can be acquired through various mechanisms, including horizontal gene transfer from viral vectors. This process is known as transduction.

**Why the Correct Answer is Right**
Transduction occurs when a bacteriophage (a virus that infects bacteria) mistakenly packages bacterial DNA instead of its own viral genome, and then transfers this bacterial DNA to a new bacterium upon infection. This can result in the acquisition of antibiotic resistance genes by the recipient bacterium. The mechanism of transduction is closely related to the process of generalized transduction, where the entire bacterial genome is transferred, and specialized transduction, where only a specific segment of the bacterial genome is transferred.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the question, as it does not describe a mechanism of acquiring antibiotic resistance.
* **Option B:** This option is incorrect because conjugation is a type of horizontal gene transfer between bacteria, not from a viral vector.
* **Option C:** This option is incorrect because transformation is the process of acquiring genetic material from the environment, not from a viral vector.

**Clinical Pearl / High-Yield Fact**
Beware of the distinction between generalized and specialized transduction, as these processes have different outcomes and implications for antibiotic resistance.

**Correct Answer:** C. Conjugation.