单选题 .  Questions refer to the following memorandum.
   
24.  How did the management get the data to compile their top 5 list?______
【正确答案】 B
【答案解析】 选项B正确,他们在办公室范围内(office-wide)进行调查,意味着全体员工都参加了。选项A、C和D在备忘录中均未提及。