If Dr.Meharry is a behaviourist,what would he most likely say is the cause of a child's disruptive behaviour in school

A)  a combination of his genetic inheritance and his prior experiences 
B)  his prior experiences 
C)  his genetic inheritance 
D)  a learning disability

Which option is best described as a hormone that induces feelings of satiety, or fullness when eating?

A) estrogen
B) polypeptide Y
C) leptin
D) cholecystokinin