John typically sits quietly in his desk and listens intently to his teacher. He gets very nervous when called on to answer a question. His upcoming assignment to speak in front of the class about a book he read recently is causing him to lose sleep and feel sick to his stomach. John is likely feeling apprehensive due to his:a.lack of confidenceb.inexperience & lack of preparationc.fear of being the center of attentiond.negative past experiences