two practical jokers want to get a horse to involuntarily “go wild” ( the horse’s heart races) every time the…

two practical jokers want to get a horse to involuntarily “go wild” ( the horse’s heart races) every time the horse hears “whoa”, the jokers will kick th ehorse in order to train him.what is the unconidtioned stimulus?

 
"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"