I believe the subject is Madame Magloire. Hope that helps!
Answer:
<h2>Negative sentence</h2>
A negative sentence is a sentence that states that something is false. In English, we create negative sentences by adding the word 'not' after the auxiliary, or helping, verb.
In this sentence the word not is added to the word do. Which makes this sentence negative.
Therefore,
Don't make noise is not a positive sentence.
It's a <u>negat</u><u>ive</u> sentence.
<em><u>Hope</u></em><em><u> this</u></em><em><u> helps</u></em><em><u> you</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
<em><u>Hop</u></em><em><u>e</u></em><em><u> you</u></em><em><u> have</u></em><em><u> a</u></em><em><u> nice</u></em><em><u> day</u></em><em><u> ahead</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>