Since it is business related always remember to include a subject line so that they know what the e-mail is about before they read it, so that they can know if it is urgent or not.
Answer:
Sorry. no answer to your question.
The answer is (a.) independent clause
An independent clause or usually referred as the main clause is a clause that can stand by itself as a sentence. The independent clause can be a complete sentence because it contains a subject and a predicate.
