What are Concurrent, Enumerated and Implied powers? How does each of it work? (please DON'T copy paste the definition here. I need an explanation for each)

Which sentence is true about preconception care? a. women who are thinking about having a child should not worry about preconception care as it is unnecessary. b. preconception care is health care you receive after you get pregnant.c. it is aimed at finding and taking care of problems that could affect you or the baby during pregnancy and steps to reduce birth defects. d. it will involve taking medication and a strict diet and exercise plan.