Which excerpt from "the roller coaster is the best example of external conflict? "oh come on," teresa said. "you have to ride with me; we’re best friends! " cecelia felt her stomach turn, but she knew she had to stand up for herself. with a mischievous smile and a soft jab to connor’s shoulder, teresa spoke instead, "nice try, but she’s riding with me." trying to keep up while her friends walked rapidly in the direction of the fun zone, cecelia criticized herself: why had she agreed? why couldn’t she just tell the truth? as she struggled to reassure herself that she had made the right decision, cecelia noticed connor approaching the bench with a bag of popcorn. .