Congenital toxoplasmosis can result from exposure to which of the following?

Congenital toxoplasmosis occurs when a mother is infected with the Toxoplasma gondii parasite during pregnancy, which can then be transmitted to the fetus. One of the primary sources of this infection is through the handling or consumption of raw or undercooked meat that may harbor the parasite.

Additionally, unvaccinated mothers provide a context where there is a higher risk of exposure to Toxoplasma, particularly if they engage in activities such as gardening or cleaning litter boxes, where they might come into contact with contaminated soil or feces from infected cats. Thus, the exposure to raw meat, along with the status of the mother's vaccinations, is particularly relevant and emphasizes the importance of food safety and hygiene practices for pregnant women.

Other options, while they mention potential environmental exposures, do not specifically correlate with the transmission pathways known to lead to congenital toxoplasmosis in the same direct manner as the consumption of raw meat and the condition of maternal vaccination status.