Answer:
The correct answer is "Deficient knowledge related to drug and herbal effects during pregnancy".
Explanation:
It is a erroneous idea for pregnant women to take natural and herbal remedies instead of drugs in order to avoid any potential harm to the embryo. In this case, the nurse could diagnose that the woman has deficient knowledge about this topic and must be educated. Natural and herbal remedies usually are not regulated, which means that they could be comprised of a mixture of compounds with unknown side effects. Pregnant women must avoid taking these remedies.