英语阅读（2）In education,there should be a good balance among the

英语阅读
（2）In education,there should be a good balance among the branches of knowledge that contribute to effective thinking and wide judgement． Such balance is defeated by too much emphasis on any one field． This question of balance involves not only the relation of the natural sciences,the social sciences and the arts,but also relative emphases among the natural sciences themselves．
Q：The word“defeated”in this paragraph most probably means _________．
A）broken B）beaten C）destroyed D）damaged
为啥选A