(A) to warm the Earths atmosphere even more rapidly than carbon dioxide during the next fifty years
(B) to warm the Earths atmosphere even more rapidly over the next fifty years than carbon dioxide will
(C) during the next fifty years to warm the Earths atmosphere even more rapidly than carbon dioxide
(D) a warming of the Earths atmosphere during the next fifty years even more rapid than carbon dioxides
(E) a warming of the Earths atmosphere even more rapid than carbon dioxides will be over the next fifty years
Solution
Parallelism + Idioms
In C, D, and E, threaten to (idiomatic) should have been used. Hence, these choices are incorrect.
In A, action of threatening to warm of 'Tiny quantities of more than thirty rare gases' is compared to 'carbon dioxide'. Hence, A is incorrect. Will must be added before the next fifty years in order to correct the error.
In B, the error in A is rectified and parallelism is maintained and hence, B is the best choice.
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