The two sentences that support the main idea are "She planned what she would say to Dr. Ferlinger...," and "O'Brien... rapped her fingertips impatiently."
<h3>What is a main idea?</h3>
The main idea of a passage or literary work is the most important topic presented in it. Here, according to the instructions in the question, the main idea is that someone is frustrated and in a rush to get to a doctor's appointment.
Two sentences that support that main idea by revealing those two pieces of information - someone's rush and going to the doctor's - are:
- She planned what she would say to Dr. Ferlinger when she arrived at his office.
- O'Brien exhaled a sigh, and rapped her fingertips impatiently.
O'Brien is rapping her fingers impatiently because she is in a rush, and waiting for the train is quite annoying. And she is going to see Dr. Ferlinger. Therefore, the correct answers are options B and D.
Learn more about main ideas here:
brainly.com/question/1119015
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