共通テスト（英語） 過去問
令和8年度（2026年度）本試験
問81 (英語リスニング（第6問） 問4)

会話を読み、問いの答えとして最も適切なものを、選択肢のうちから一つ選びなさい。

＜状況＞
三人の学生（Martin、Tetsuya、Vicky）が、音楽の聴き方について話をしています。

Martin：Yesterday, I was using my earphones on the train, and someone complained that they could hear my music. Has that ever happened to you, Tetsuya？
Tetsuya：No. Maybe it’s because I use headphones.
Martin：Hmm, maybe I should get headphones too. What do you use, Vicky？
Vicky：I use earphones, but I just play my music quietly. It doesn’t seem to bother others on the train.
Tetsuya：You just need to be more careful on the train, Martin.
Vicky：Actually, you should be careful everywhere.
Martin：Why？
Vicky：Because you might not hear vehicles approaching if you play your music too loudly while walking outside. I heard that over 30 people in this area were nearly hit by cars while listening to loud music on their earphones.
Martin：I didn’t know that. It seems like there are problems I wasn’t aware of. I think I need to adjust my volume rather than change devices.
Tetsuya：Right, it’s not a device problem. I wear headphones but can still hear outside sounds just fine. That’s safe enough, isn’t it, Vicky？
Vicky：If your volume is low enough that you can hear outside sounds, you probably don’t need to lower it any further.
Tetsuya：That’s a relief. If I had to do that, I wouldn’t be able to hear my music at all.

会話を踏まえて、Vickyの発言の根拠となる図表を、選択肢のうちから一つ選びなさい。