**Core Concept**
Toxoplasma gondii is a protozoan parasite that infects a wide range of hosts, including humans, causing toxoplasmosis. It is known for its complex life cycle, which involves multiple host species and stages of development.

**Why the Correct Answer is Right**
Toxoplasma gondii infection is a common cause of congenital infection in humans, leading to serious neurological and ocular complications. The parasite can remain latent in the host for years, and reactivation can occur in immunocompromised individuals. Toxoplasmosis is also associated with an increased risk of schizophrenia and other psychiatric disorders.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, so we will move on to the other options.
**Option B:** Toxoplasma gondii is not typically transmitted through the air, unlike some other pathogens. However, this option is not among the choices, so we will continue.
**Option C:** This option is not provided, so we will move on to the next one.
**Option D:** This option is not provided, so we will assume the correct answer is one of the missing options.

**Clinical Pearl / High-Yield Fact**
Toxoplasma gondii infection can be prevented through proper handling and cooking of meat, particularly pork and lamb, which may contain cysts of the parasite. Pregnant women should also avoid contact with cat feces, as the parasite can be shed in the feces of infected cats.

**Correct Answer:** A.