Anna recently learned that she is pregnant and is visiting her doctor for her first prenatal visit. Among the many pieces of advice offered to ensure a safe pregnancy, the doctor specifically told Anna to avoid eating any rare meats, including steaks and roast beef, and to avoid changing her cat's litter box. These words of caution were primarily directed at avoiding contact with
A. Taenia saginata
B. E. coli O157:H7
C. Cryptosporidium
D. Toxoplasma gondii
Answer: D
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