Which Adult Seems to Be Well Informed and Have the Right

Which adult seems to be well informed and have the right idea about children's handedness?

A) "You don't want Alissa to be left-handed. Encourage her to use her right hand."
B) "Stop trying to make Aden right-handed. Handedness is genetic."
C) "Leave Michelle alone. It's too late to change her handedness."
D) "Teach Mark to use both hands equally. If you train him early, he'll do well with both hands."