In a Classic Study (Lewis and Brooks-Gunn, 1979), Researchers Asked

In a classic study (Lewis and Brooks-Gunn, 1979) , researchers asked infants' and toddlers' mothers to put a small spot of rouge on their children's noses while pretending to wipe them. The researchers then observed the toddlers' behavior when looking in a mirror. What research question was this study designed to address?

A) At what age do young children begin to show facial expressions of surprise?
B) At what age do young children begin to laugh in amusement?
C) At what age do young children attribute the trick with the rouge to their mother?
D) At what age do young children begin to develop a sense of self?