"Tu veux celle-là ou celle qui est plus serrée ?"

Translation: Do you want that one or the one that is tighter?

[MichelLemoine123]

"You want that one or the tighter one?" is also accepted.

[RichardHoma]

Why not this one that is tighter?

[CinnamonTe1]

That would be:

Tu veux celle-là ou celle-ci qui est plus serrée ?

[RichardHoma]

I can see that that is one way of expressing it, but as 'celle' is normally translated as 'this' or 'that', since it is being used in contrast to 'celle-là' it seems to me that the 'ci' is superfluous. See https://www.lawlessfrench.com/grammar/demonstrative-pronouns/, where it says, "The singular adjectives [actually demonstrative pronouns, celui and celle] can both mean "this one" or "that one""

[JenkinsLeon]

I really think that Duo needs to look at the range of English answers allowed. I am getting all of the French answers right and failing on most of the English answers. I am a native speaker and most of my English answers are correct.

[Atervanda]

You should use the report button if you believe your translation should be accepted. Sentence discussions are not for reporting errors.

[RichardHoma]

Atervanda is right. This is a user forum, in which Duo does not participate. If you have a specific question, on the other hand, sometimes other users can provide insight.