Which of the following is NOT a contraindication to breastfeeding?

The choice identifying the use of prescribed drugs as not a contraindication to breastfeeding is correct because many medications are considered safe during breastfeeding. Healthcare providers evaluate the type of medication, the dosage, and its potential effects on the infant. Many mothers can continue to breastfeed while taking prescribed medications, especially those that are not known to transfer significantly into breast milk or are deemed safe for the nursing infant.

In contrast, the other options pose significant risks. Mothers who need cancer treatment with chemotherapeutic agents typically face contraindications because these drugs can be harmful to an infant through breast milk. A seropositive status for HIV remains a contraindication because the virus can be transmitted via breast milk, posing serious health risks to the infant. Lastly, untreated active tuberculosis is a serious infection that can also be transmitted, making breastfeeding unsafe until the condition is treated. Therefore, the information supports the idea that using prescribed drugs does not automatically negate the safety of breastfeeding, making it a proper context for this situation.