GMAT Sentence Correction (SC) | By steadfastly facing up to an army as indomitable as the

The main subject in this sentence, Churchill
1. steered Britain from definite doom
2. changed the course of History
Usesnot only X but also Y which is the right idiomatic expression.

How did he do this?
1. By steadfastly facing up to an army as indomitable as the German
2. By cordial relations with as differing regimes as the US and the Soviet throughout the course of the war
3. By lifting the morale of a war-torn country through his inspirational speeches.

Option C corrects the grammatical
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