dialogue: Girl: Dad, I need a few supplies for school, and I was wondering if .... Dad: Yeah. There are a couple of pencils and an eraser in the kitchen drawer, I think. Girl: Dad, I'm in eight grade now, and I need REAL supplies for my demanding classes. Dad: Oh, so you need a ruler too? Girl: Dad, I need some high-tech tech stuff like a calculator, a Palm Pilot, and a laptop computer. Dad: Uh. I didn't have any of that when I was in middle school, and I did just fine. Girl: Yeah, and they weren't any cars either, WERE there. [Hey] And things are just more progressive now. Dad: Well, we can rule out the hand pilot [Palm Pilot, Dad]. Whatever, AND the computer ... unless mom lets you sell the car. And as for the adding machine [Calculator]. Yeah, I think mine from college is kicking around here somewhere. Girl: Dad, I need a calculator for geometry, and I have heard you can download free software from the Internet. Dad: Great. My daughter will be playing video games in geometry class. Girl: Dad. Dad: Okay. How much is this thing going to cost me? Girl: Well, I saw it at the store for only $99, WITH a $10 mail-in rebate, or you could buy it online. Dad: Oh. Do they throw in a few aspirin so your father can recover from sticker shock? Girl: Dad. Please!!!. Everyone has one [I've heard that before.] and you always say you want me to excel in school, and I'll chip in $10 of my own, and I'll even clean up my room [Hey!!]. Dad: Hmmm, 100 bucks. Dad: Well, you'll be supporting me in my old age, so, I guess so. When do you need it? Girl: Now, right now. [Now!] Mom's already waiting in the car for us. [Huh?] She said she would buy me an ice cream if I could talk you into to buying it for me today.
question: What specific argument does the girl give her father to persuade him to buy these things?
choice: They are on sale until the end of the week. Her teachers require them as part of the curriculum. She volunteers to use some of her own money.
answer: She volunteers to use some of her own money.