Answer :
Parallelism or parallel structure in grammar could be defined as two or more components in a sentence or text that have the same grammatical structure for the sake of impressing the reader. This method also adds balance and rhythm to sentences.
In this excerpt, parallelism is used in the following way:
C. Repeating "He has" followed by a negative noun highlights that the king did one bad thing after another.
He has followed by a noun is a structure repeated in each sentence, so as to emphasize each of the King's failures.