Final answer:
Betamethasone IM is given to a woman in preterm labor to enhance fetal lung maturity and help reduce respiratory complications in premature infants.
Step-by-step explanation:
The purpose of administering two doses of Betamethasone IM to a woman in preterm labor at 30 weeks is to enhance fetal lung maturity. This treatment helps accelerate the development of the baby's lungs, which is crucial for their ability to breathe independently after birth. Premature infants often require supplemental oxygen because their lungs are not fully developed, and Betamethasone can help reduce the likelihood and severity of respiratory complications associated with premature birth.