"Informal communications are more easily misinterpreted"
A formal tone provides the reader with a better understanding of the message sent because it lacks the everyday slangs or cultural characteristics in informal language that may sound alien to the receiver, considering many people doesn't know the meaning of some words used informally. A misinterpreted message on any business and in professional environment is an important issue to worry because most of the time it implicates in errors and failure on the tasks given to the worker.
Is there a photo you can attach or give the answer choices?
I would put D.
Hope this helps
The answer should be D. was, singular.
