Danny worked extremely hard on the project for weeks.______, he

Danny worked extremely hard on the project for weeks.______, he broke down for overworking.
A、Result
B、As a result
C、As the result
D、As a result of
【正确答案】：B
【题目解析】：As a result“结果；因此”。 As a result引导结果状语（Result-conjuncts），类似的词或词组有accordingly，consequently，hence，so，thus，therefore，as a consequence，in consequence等。