Based on paragraph 4, when should you begin the preparation for a presentation?A、Two days ahead of time.
B、As early as possible.
C、When you are clearheaded.
D、When you are not busy.
【正确答案】：B
【题目解析】：事实细节题。由题干定位于第四段，第一句话的后半句就是题干的答案begin preparing as far ahead of time as possible，这句话就是B选项的内容。