When Children's Ability to Delay Gratification Was Tested, the Researchers

Multiple Choice

When children's ability to delay gratification was tested, the researchers found that ___________ children were better able to regulate their behavior, that __________ were able to wait longer before "peeking", and there ___________ a gender difference in the likelihood that a child would peek at some point.

A) older; girls; was not
B) younger; girls; was
C) older; boys; was
D) younger; boys; was not