Final answer:
Health insurance policies usually provide coverage for a newborn from birth without additional premiums for the first 30 days.
Step-by-step explanation:
The neonatal period, as described in health sciences, covers the first to the thirtieth day after birth. During this time, the newborn adjusts to life outside the uterus. In the context of health insurance and coverage, additional premiums or continuations are typically not required to make coverage effective for a newborn infant from the moment of birth. Most health insurance policies cover a newborn for the first 30 days without additional premiums. Therefore, the correct answer to the question would be: A) 30 days.