Respuesta :
The sentence that should be at the beginning of a paragraph is option 3. the topic sentence.
What is the topic sentence?
It is the sentence where it summarized the main and key idea of the paragraph. It is normally the first sentence in the paragraph.
Also, it organizes the overall paragraph.
hence, The sentence that should be at the beginning of a paragraph is option 3. the topic sentence.
Learn more about paragraph here: https://brainly.com/question/20007590