**Core Concept**
The question is testing the student's knowledge of the vectors responsible for transmitting various diseases. Specifically, it's about identifying the vector responsible for transmitting a particular disease.

**Why the Correct Answer is Right**
Soft ticks (genus *Ornithodoros*) are vectors for certain tick-borne diseases. One of the notable diseases transmitted by soft ticks is Relapsing Fever. Relapsing Fever is caused by the bacterium *Borrelia recurrentis*, which is transmitted through the bite of an infected soft tick. The disease is characterized by recurring episodes of fever, headache, and muscle pain, with the bacteria migrating between the tick's midgut and salivary glands.

**Why Each Wrong Option is Incorrect**
**Option A:** Soft ticks are not typically associated with Lyme disease, which is primarily transmitted by hard ticks (genus *Ixodes*).
**Option B:** Soft ticks are not known to transmit Rocky Mountain spotted fever, which is primarily transmitted by the American dog tick (genus *Dermacentor*).
**Option C:** Soft ticks are not associated with Anaplasmosis, which is primarily transmitted by the blacklegged tick (genus *Ixodes*).

**Clinical Pearl / High-Yield Fact**
Soft ticks are primarily nocturnal and tend to feed on the blood of mammals and birds, often in caves, burrows, and other dark, humid areas.

**Correct Answer: C. Babesiosis.**