Route of transmission of toxoplasma -a) Bloodb) Fecesc) Urined) None

**Core Concept**
Toxoplasmosis is a parasitic infection caused by Toxoplasma gondii, a protozoan that can be transmitted to humans through various routes. The transmission of toxoplasma is an important public health concern, particularly in immunocompromised individuals.

**Why the Correct Answer is Right**
The primary route of transmission of toxoplasma is through the ingestion of oocysts, which are shed in the feces of infected cats. When an infected cat defecates, the oocysts are released into the environment and can contaminate soil, water, and other surfaces. If an individual ingests contaminated food or water, they can become infected with toxoplasma. This is why proper handwashing and cooking of food are essential in preventing the transmission of toxoplasma.

**Why Each Wrong Option is Incorrect**
* **Option A:** Blood transmission of toxoplasma is rare and typically occurs through blood transfusions or organ transplantation from an infected donor. This is not the primary route of transmission.
* **Option B:** Fecal-oral transmission of toxoplasma is correct, but it's more specific to the ingestion of oocysts from contaminated soil or water, rather than the general term "feces".
* **Option C:** Urine transmission of toxoplasma is not a recognized route of transmission.
* **Option D:** None is incorrect because there is a correct answer, which is fecal transmission.

**Clinical Pearl / High-Yield Fact**
Toxoplasma infection can be prevented by avoiding contact with cat feces, washing hands thoroughly after handling soil or sand, and cooking meat to the recommended internal temperature.

**Correct Answer:** B. Feces