In class, we were studying the word 'one' as a pronoun (代名詞), so I brought three neckties, & had my student choose one for me to wear.
Me: Which one should I wear?
S: The red one.
Me: on...?
S: The red check (チェック) one on the left.
Me: Why not the others?
S: I like the green one with white dots too, but the red one is best.
Me: Okay, I`ll wear the red one.
And I did.