C. Commas is what sets apart an appositive
Answer:
formal
Explanation:
'strict' and 'harsh' are out because business letters are not meant to insult or criticise, but rather to be courteous (polite). 'fancy' is out because business letters do not use unnecessarily flowery language.
as such, that only leaves us with 'formal' which is an appropriate tone for a business letter since it conveys a sense of seriousness.
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studying the historical context helps you understand what happened during that period time.
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This mostly depends from country to country, but most commonly people such as teachers, accountants, often doctors, builders and civil engineers, basic lawyers are often found as parts of a saturated job market.
The answer you have selected makes the most sense