In what way can some anthelmintics affect pregnant women?

Some anthelmintic agents can indeed have implications for pregnant women due to concerns about safety and potential side effects. The use of these medications during pregnancy often requires careful consideration of the risks versus benefits, as certain anthelmintics may have teratogenic effects or could negatively impact fetal development.

The recommendation for caution stems from the necessity to protect both the mother and the developing fetus; therefore, thorough research and professional guidance are critical before prescribing these medications in pregnant women. The nature of anthelmintics varies widely, and while some may be deemed safe in specific trimesters or circumstances, not all are appropriate for use during pregnancy, particularly during the early stages, when fetal organs are developing.

This careful consideration underscores why it's crucial to evaluate each case individually, making option A the most accurate statement regarding the use of anthelmintics in pregnant women.