The part of a sentence that tells who or what the author is talking about is always the subject of the sentence.
A sentence can be defined as a set of words that together express a coherent and complete idea. Here is an example "Yesterday, she started a new project".
Most sentences include:
Based on the information above, it can be concluded that the part of the sentence that tells who or what the author is talking about is the subject.
Learn more about sentences in: https://brainly.com/question/18728726
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