A student takes a beginning golfing class and is asked to conduct a search on ways to improve his stroke. The student, however, wants to avoid results that explain the causes of the medical condition known as a stroke. Which Boolean search would return the most useful results?


A.Using OR between two key words: golf OR stroke B.Using AND between the search terms: golf AND stroke C.Using quotation marks around the single word "stroke" D.Using NOT before a keyword: golf NOT stroke