Answer: A. "Are you pregnant
Step-by-step explanation:
Untreated tuberculosis in pregnant women can pose a significant threat to the mother as well as the fetus. The four drugs named isoniazid, rifampicin (rifampin), ethambutol and pyrazinamide have been proved to be an excellent safety record for pregnancy. These drugs are useful for the treatment of tuberculosis and are not at all associated with fetal malformation during the gestation period.
Thus on the basis of the above explanation, the provider must ask the client about pregnancy as the drugs are useful for treating tuberculosis in pregnancy.