Hiram Bingham discovered Machu Picchu on July 24th 1911
A)Please review our suggestion for paving over the muddy area where students wait before school.
Option A has the correct revision for a formal email. It states the topic without using any informal tone or voice. Option B is informal because of the introductory phrase "you now" and the vagueness of the observation "it's gross." Option C is informal due to the words "awesome" and "gross". Option D is informal because of the use of the word "obviously" and "smart".
The answer is c. a metaphor
