**Core Concept**
Soft ticks (genus *Dermacentor*, *Hyalomma*, and *Rhipicephalus*) are vectors for several zoonotic diseases. These ticks have a complex life cycle, involving multiple hosts, and play a significant role in the transmission of various pathogens to humans. Understanding the tick-borne diseases is crucial for public health and preventive medicine.

**Why the Correct Answer is Right**
Tularemia, caused by *Francisella tularensis*, is primarily transmitted through contact with infected animals, contaminated water, or vectors like mosquitoes, not ticks. The primary vectors for tularemia are mosquitoes (mainly *Aedes* and *Anopheles* species). Soft ticks are not the primary vectors for tularemia transmission. In contrast, the other options (KFD, Q fever, and Relapsing fever) are all transmitted by soft ticks.

**Why Each Wrong Option is Incorrect**
**Option A:** KFD (Kyasanur Forest Disease) is transmitted by the bite of an infected hard tick *Hyalomma anatolicum anatolicum*, not a soft tick.
**Option C:** Q fever is primarily transmitted by the bite of an infected hard tick *Dermacentor* or *Rhipicephalus* species, but also by inhalation of contaminated dust or contact with infected animals. However, it is not exclusively transmitted by soft ticks.
**Option D:** Relapsing fever is transmitted by the bite of infected soft ticks (genus *Ornithodoros*), which are the primary vectors for this disease.

**Clinical Pearl / High-Yield Fact**
Soft ticks are vectors for several zoonotic diseases, including KFD, Q fever, and Relapsing fever. Understanding the tick-borne diseases is crucial for public health and preventive medicine, especially in regions where these ticks are prevalent.

**Correct Answer:** **✓ Correct Answer: B. Tularemia**