A、She attended one of their meetings. B、Her roommate is a member. C、She read about them in the newspaper. D、She saw them protest

W: Hmm, hi.
M: Hi, I am going door to door tonight to tell people about the student action coalition. Do you have a few minutes?
W: Sure. I read something in the newspaper last week.
M: Yeah, there was an article about us since the last issue. See, [20]we are trying to protect and conserve some of the open spaces on campus.
W: That’s right. You are the group that’s opposing the extension of the parking lot next to Smith Hall, right?
M: That’s us. We just feel it is important to save some of the natural beauty of the campus, like Over-by Swing. Some of those trees are hundreds of years old.
W: It is a pretty spot. My friends and I had picnics over there by the creek.
M: Then you understand how we feel. We are organizing a rally on Thursday afternoon to get the administration to reconsider the parking lot plan.
W: Well, I have a class on Thursday afternoon.
M: [21]But maybe you could sign this petition. We’re going to submit it to the administration to demonstrate how the students feel about this.
W: Sure, 1et me get a pen and I’ll sign it.
M: I have a pen right here. And let me leave you this pamphlet about the student action coalition. Maybe you could come to some of our meetings. We get together once a month.
W: Yeah, I’d like to know more about your group. Let me know when the next meeting is and I’ll try to be there.
M: The meeting is held on the fifth each month, and your coming will be welcome.
19. How did the woman first learn about the student action coalition?
20. What is the student action coalition trying to do?
21. What does the woman agree to do?