Gas is the state of matter found in an inflated car tire.
The only element among these that are to be used in a formal letter are complex sentences.
As a matter of fact, idioms, contractions, and cliches should be avoided because they are very informal.
Good morning!
The correct answer is option D, omission.
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Hope this helps! Have a great day Sir/Ma'am!!
(I would love brainlest!)
-Sky