There is a test question that goes like this:
¿Qué viaje prefieres comprar? Prefiero ________.Which trip do you prefer to buy? That one over there.
The correct answer is "aquel". However, this doesn't make sense to me, as a trip isn't a thing you can see/touch. It's a series of connected actions (traveling from point A to B, seeing things, doing things) and as such seems more of an abstract concept or idea than a physical thing like a coat or a skirt.
According to the lesson text, the proper use of "aquello" is when referring to an idea. As such, I would choose "aquello" as the pronoun.
Am I interpreting the use of "aquello" incorrectly, or is the answer wrong?