Answer:
D. Using contractions or abbreviations because they are too formal and easily confused, respectively.
Explanation:
This is incorrect because contractions are too informal, rather than too formal. The latter part of the sentence is true - abbreviations can indeed be easily confused.
Contractions should always be avoided when writing a formal text such as a business proposal. Instead of writing <em>I can't, </em>you should always write <em>I cannot </em>instead of its contracted form.
It’s C allows market forces of supply and demand to set the value of a currency
Rock and minerals are both considered to be natural substances and this is what they have in common.
She should re-read her poem carefully and see if she has spelling errors..
