D. TEACHERS AND COACHES. HOPE I HELPED!!!!!!
D.
This is because due to the verb in accordance to 'down', removing the adverb would not make a complete sentence. Since a verb is used to describe an action, the adverb would only come after a verb in order to describe it where necessary. Therefore, D. is the answer.
Glazing pottery can be tricky <u>but</u>, the stunning results make the effort worthwhile.
