**Core Concept**
Meliodosis is a bacterial infection caused by Burkholderia pseudomallei, which primarily affects the lungs and can disseminate to other organs. The infection is typically acquired through direct contact with contaminated soil or water.

**Why the Correct Answer is Right**
Burkholderia pseudomallei is a gram-negative, aerobic bacterium that thrives in tropical and subtropical regions. The bacteria can enter the body through cuts or abrasions in the skin, inhalation of contaminated particles, or ingestion of contaminated water. Once inside the body, B. pseudomallei can cause a range of symptoms, from mild to severe, including pneumonia, septicemia, and abscesses.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to Meliodosis, as it is not associated with a bacterial infection.
* **Option B:** This option is not correct, as it refers to a different type of bacterial infection (Leptospirosis) caused by Leptospira bacteria.
* **Option D:** This option is not relevant to Meliodosis, as it is not associated with a bacterial infection.

**Clinical Pearl / High-Yield Fact**
Burkholderia pseudomallei is often found in soil and water contaminated with bird or bat droppings, making areas with high animal activity and poor sanitation more susceptible to Meliodosis outbreaks.

**Correct Answer:** C. Burkholderia pseudomallei.