The answer is all of the above except choice 3.
In a business setting, you never want to use a detached tone. This gives the impression to your colleague/boss/etc. that you don't care and don't really want to be there. It shows that you don't see them as important and don't care about what they have to say. It won't achieve anything for you.
Answer D is the best example of imagery through onomatopoeia.In this description, the reader can easily imagine the fire's appearance and sound.
Answer: The object of the preposition by means of is "protest".
Explanation:<u> The object of the preposition is a noun or a pronoun that completes a prepositional phrase</u> which has been introduced by a preposition. Most times, this noun or pronoun is found to the right of the preposition. Moreover, in some cases, a gerund can also function as object of the preposition, In the sentence provided,<u> the object of the proposition is a noun ("protest") and it is found to the right of "by means of". </u>
Answer:
the teachers gave the childrens more knowledge