Answer: d) alert inactivity.
Explanation:
Newborn babies go through a series of states during the day. Alert inactivity refers to the time when the baby is quiet, observant, and seems to be focusing on what´s happening around him.
Waking Activity refers to a baby when is active without focusing on anything. Crying takes around 2- to 3 hours of their time. Sleeping takes an average of 16 to18 hours a day.