Terry and His Mother Are Securely Attached to Each Other

Terry and his mother are securely attached to each other. However, his mother has to return to work and Terry is about to start daycare. According to research by Ahnert and colleagues, what is most likely to happen?

A) Terry will not show any signs of stress when his mother leaves.
B) Terry will show signs of stress when his mother leaves.
C) Terry's mother will be more stressed out than he is.
D) Both Terry and his mother will not show any signs of stress.