​Why Do Psychologists Infer That Many 2-Year-Old Children Have a "Sense

Multiple Choice

​Why do psychologists infer that many 2-year-old children have a "sense of self"?

A) When they see a spot on their face in the mirror, they touch their face.
B) ​They speak more slowly when talking to other children than to adults.
C) ​They pay more attention to an "informed" adult than an uninformed one.
D) ​When they see an "impossible" event, they stare in apparent surprise.