Final answer:
An obstetrician is a specialist in the field of study of pregnancy and childbirth. They provide prenatal care, deliver babies, and monitor the health of both the mother and the baby during pregnancy and childbirth. Hence the correct answer is option 3
Step-by-step explanation:
A specialist in the field of study of pregnancy and childbirth is called an obstetrician. Obstetricians are medical doctors who specialize in the care and management of pregnancy, childbirth, and postpartum period. They provide prenatal care, deliver babies, and monitor the health of both the mother and the baby during pregnancy and childbirth.
Hence the correct answer is option 3