People are usually most familiar with which element of emotion?

The longest and final stage of prenatal development is the ________ stage

Fill in the blank with the appropriate word.

When 6-month-olds listen to the words "Mommy" and "Daddy" while looking at side-by-side videos of their parents, they

A) always look longer at their mother. B) always look longer at their father. C) look longer at the video of the named parent. D) look longer at the parent who feeds them most often.