His sister drove him to the audition—an obstacle course of cooking tests to the owners of the restaurant select an assistant. in this sentence from paragraph 4, the author compares the audition for the restaurant assistant to an obstacle course to show that a) the head chef would be difficult to work with. b) the audition would be held outside and would require athletic skill. c) there would be many different, and perhaps difficult, parts to the audition. d) being a restaurant assistant requires more than just being able to cook well.