Final answer:
Rho(D) immune globulin is prescribed for an Rh-negative mother undergoing amniocentesis to prevent Rh factor-mediated hemolytic disease of the newborn (HDN) in subsequent pregnancies with an Rh-positive fetus.
Step-by-step explanation:
The Rho(D) immune globulin will be prescribed for an Rh-negative mother undergoing Amniocentesis.
Amniocentesis is a diagnostic test performed during pregnancy to examine the amniotic fluid surrounding the developing fetus. This test is often recommended for pregnant women with certain risk factors, such as advanced maternal age or a history of genetic disorders. Rho(D) immune globulin is prescribed during amniocentesis to prevent Rh factor-mediated hemolytic disease of the newborn (HDN) in subsequent pregnancies with an Rh-positive fetus.
Therefore, the correct answer is b. Amniocentesis.