Which of the following sentences successfully uses parallelism to revise this passage?

A. king grabs power by gathering armies, fighting wars, and building castles.

B. king grabs power by gathering armies. they also fight wars and build castles.

C. kings grab power by gathering armies, fighting wars, and they build castles.

D. by gathering armies, fighting wars and castle-building, kings grab power.

The sentence that uses parallelism in this passage is option A) "King grabs power by gathering armies, fighting wars, and building castles." For a sentence to properly use parallel structures, it must have verb tense agreement and also follow the same pattern. Parallel structures are useful writing resources that add coherence to a text. In this sentence, pattern is followed by using the same gramar structure "verb+ing" as in "gathering", "fighting", and "building". It also uses an object after each "verb + ing" as in "armies", "wars", and "castles". The other sentences do not use parallel structures since the pattern mentioned previously is not followed.

Sentence A) is the correct answer.