[Knight of Gondor]

The point is moot! But if your scenario had taken place, Aragorn could not have, because he knew his weakness as a man, and would have refused. Legolas might have, but I doubt it. Sam would have been my next choice, because he was a fellow hobbit. It's possible that Gimli could have taken it, because Dwarves can go for long periods of time with "heavy burdens", and the Ring is the heaviest of all! I doubt Merry or Pippin would have.