challenge: Why is it desirable to transition a baby from a bassinet to an infant bed?
  
  A. Because infant beds have a higher center of gravity and less mass
  B. Because infant beds are more portable and easier to move around the house
  C. Because infant beds are more stable and can withstand a baby's rolling and movement
  D. Because infant beds are specifically designed for newborns and bassinets are for older babies
  Answer: 