OG 259 ??? 求助

with二

259. Five fledgling sea eagles left their nests in western Scotland this summer, bringing to 34 the number of wild birds successfully raised since transplants from Norway began in 1975.  


(A)bringing


(B) and brings


(C)and it brings


(D)and it brought



(E) and brought  *



  Choice A is best. The "-ing" (present participle) form intro duces action that is simultaneous with the action of the main clause; i.e., bringing indicates that the number of wild birds became 34 when the sea eagles left their nests.

      ???  In E, the use of and brought implies two discrete actions on the part of the eagles, and thus lacks the clarity of the best answer, where bringing underscores the cause-and-effect nature of the situation

什么意思呀, 谁能帮我把原句和E翻译一下. bringing....怎么会raised?

thanks

with二

I see,  I am so stupid. raise means grow up.

bringing to means leading to ?

??what's   the meaning of  "where bringing underscores the cause-and-effect nature of the situation  "?

thanks