The subject of the sentence you.
How to identify the subject or subjects of a sentence?
To identify the subject or subjects of a sentence we must bear in mind that the subject of a sentence is the person or the people who is performing, has performed or is going to perform an action (verb).
According to the above, it can be established that the subject of this sentence is "you" because it is the person who performs the action, in this case it is "you need to take out the garbage". Additionally, we can rule out that the teacher is not subject of the sentence because he is not performing any action with respect to the sentence.
So the correct answer would be the subject "you", while "The teacher" is not classified as a subject of the sentence.
Learn more about subject in: https://brainly.com/question/2193378
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