Question for everyone here: I have two US passports, one passport that expired in 2019 that had a 10 year validity, and another that expires in July that was issued by the State Department (frequent traveler) in 2017 for four years.

I can't get a conclusive answer as to which passport I submit for the renewal on the DS-82. Calling in doesn't get me a clear answer. I was first told that I need to submit my limited validity passport, and then was told on the same call at the end that it's the expired passport.