Respuesta :
The third sentence should be revised. This is how you could fix it: "Previously, only amateur players, like college athletes, were allowed to participate." This helps the sentence to flow better, and the writer is now speaking the active voice.
The sentence that should be revised to improve this paragraph’s sentence fluency is: Sentence 4.
What is fluency?
Fluency is the smooth flow of ideas and thoughts. The paragraph basically discusses the location and timing of the Olympic Games.
Sentences 1 through 3 reflected these thoughts but sentence 4 was out of context because it discussed the US squad.
Learn more about fluency here:
https://brainly.com/question/1041455