If you wanted to add a sentence after the first sentence of this paragraph, for the purpose of clarifying concepts and providing detail, which would be the most appropriate? a) science, however, makes these reactions irrelevant. b) of course, some of us just like to take long walks on the beach, instead. c) we love going on these rides because we crave the excitement of an adrenaline rush. d) most roller coasters are safe to ride; however, there have been accidents in the past.