You don't remember her last name, ...?

Question:

You don't remember her last name, ...?

Options:

• don't you
• are you
• do you

Analysis:

The question is asking for a phrase that completes the sentence in a way that makes grammatical sense and conveys the intended meaning. The phrase "don't you" fits grammatically and contextually, forming a common rhetorical question structure. "Are you" and "do you" do not form grammatically correct or logical completions in this context.

Answer:

don't you