Dr. Patel does an experiment in which she shows people either a happy movie, a sad movie, or no movie in a classroom. Then, she asks them to fill out a survey assessing their feelings about whether they want to adopt a pet from the animal shelter. In this experiment, what is the INDEPENDENT variablea. The participantsb. The classroom locationc. Their feelings about pet adoptiond. How long the movie lastse. The type of movie viewed