In the given question, the sentence is divided into three parts I, II, and III. For each part, an alternative statement is also given. You have to determine if a part requires a correction and then mark that as your answer.

We forget about the voices we smother with our / self-righteous rage in our haste to denounce these / awful deeds as loud as possible.

I. We forget about the voices we smoth with our 

II. self-righteous rage in our haste to denounced these

III. awful deeds as loudly as possible.