**Core Concept**
Toxoplasmosis is a parasitic infection caused by *Toxoplasma gondii*, which can lead to congenital infection in newborns when acquired by pregnant women. This infection can have severe consequences on the developing fetus, including ocular and neurological abnormalities.

**Why the Correct Answer is Right**
The congenital infection occurs due to the transplacental passage of *Toxoplasma gondii* from the mother to the fetus. This is facilitated by the parasite's ability to evade the maternal immune system and cross the placental barrier. The infection can lead to severe ocular and neurological manifestations, including chorioretinitis, hydrocephalus, and intracranial calcifications.

**Why Each Wrong Option is Incorrect**
**Option A:** Not applicable, as this option is missing.
**Option B:** Incorrect, as toxoplasmosis in children typically presents with ocular and neurological manifestations, not gastrointestinal symptoms.
**Option C:** Incorrect, as toxoplasmosis in children is not primarily associated with respiratory symptoms.

**Clinical Pearl / High-Yield Fact**
Toxoplasmosis is a significant concern in pregnant women, especially those with pre-existing immunosuppression. It is essential for obstetricians and pediatricians to be aware of the risks of congenital toxoplasmosis and take necessary precautions to prevent transmission.

**Correct Answer:** B.