Well, basically, you need all of them in all types of careers, but the point here is that for an improvement in the academic identity, you need research skills, because you have to write papers that need to have verifiable theses which you come by only through research. And you also need to do research to be able to do any writing, since you need to know theories and other people's works on the specific topic you are writing about.
Answer:
Mark Spitz can legitimately claim the title of second-best American swimmer in history. His mark of seven gold medals in the 1972 Olympics has only been eclipsed by Michael Phelps’ record of eight in the 2008 Beijing Games.
Explanation: