which is an example of classical conditioning? a. blindfolding someone and timing him to see how long he takes to find a button hidden in a room b. telling students if they fill up a jar with tokens for good behavior, then they will get a pizza party at the end of the year. c. being afraid of thunder and lightning because the last two times you were in a thunderstorm, there were also tornadoes. d. watching your grandmother make her favorite recipe multiple times, as you help her out, and later discovering you can make the recipe by yourself.