Explanation
Correct answer: D.
Choice D is the best answer because it most accurately describes the main purpose of the text. In the first sentence of the text, the narrator states that she thinks there’s a chance she will become part of the basketball team at her college. She goes on to explain that she is "quick" and "tough." Based on these characteristics, she thinks she has a chance to join the team. Thus, the main purpose of the text is to explain why the narrator thinks she might make the basketball team.
Why the other choices are wrong
Choice A
Choice A is incorrect because the text focuses solely on basketball and doesn’t mention any other kinds of sports.
Choice B
Choice B is incorrect because the text doesn’t describe aspects of the game of basketball. Instead, it provides the narrator’s reasoning for thinking that she might make her school basketball team.
Choice C
Choice C is incorrect. Although the narrator explains why she thinks she will be chosen for the basketball team at her school, the text doesn’t go into the general decision-making process or the requirements for being picked for the team.