求助16og 句子改错第2题！！

俣贝加油～

Hurricanes at first begin traveling from east to west, because that direction is the way the prevailing winds in the tropics blow, but they then veer off toward higher latitudes, in many cases changing direction toward the east before dissipating over the colder, more northerly waters or over land.   

A. Hurricanes at first begin traveling from east to west, because that direction is the way the prevailing winds in the tropics blow, but                     

B.At first, hurricanes travel from east to west, because that is the direction of the prevailing winds in the tropics, but                                                         

C.While hurricanes travel from east to west at first, the direction of the prevailing winds blowing in the tropics, and                                                      

D.Because hurricanes at first travel from east to west, since it is the direction of the prevailing winds in the tropics                                                   

E. Hurricanes, beginning by traveling from east to west, because this is the direction of the prevailing winds in the tropics

• This sentence begin with a dependent clause(that is, a clause that cannot stand on its own), anticipating a main clause( also known as an independent clause) to complete the sentence; a main clause does follow, but it is connected to the initial dependent clause by the coordinating conjunction and, which would be appropriate here only if the initial clause was of the same grammatical type (that is, was also a main clause).
  

这个是og上对c选项的解释，and连词后面就没看懂

哪位大神能帮忙解释一下c选项吗？

vivi00

c选项 and前只有while引导的一个分句，没有主句，and后是一个主句。解释的意思是说，and后是一个主句，前面也应该是一个主句。

俣贝加油～

vivi00 发表于 2016-10-4 15:19
c选项 and前只有while引导的一个分句，没有主句，and后是一个主句。解释的意思是说，and后是一个主句，前面 ...

哦哦，明白了，所以不选这个选项的原因是因为这个没有遵循and的并列规则吧。
谢谢啦