In a Study of the Synergy of Emotional Regulation Between

In a study of the synergy of emotional regulation between mothers and their 3-year-old children while playing with a puzzle, researchers found that _____.

A) the children usually gave up and watched their mothers construct the puzzles
B) mothers in the study needed advice on how to scaffold better
C) puzzles were an inappropriate task for mothers and small children
D) mothers and children regulated or deregulated each other's emotions