Just starting out on Twine, so I'm not committed to Harlowe 1.2.3 (it just appears to be the default), so if this is easier to accomplish with another story format I have no qualms changing.
I'm trying to track a few variables across your choices, and once you reach the end, display a result based on your highest variable. From my reading this appears to be referred to as a setter link, but I can't seem to nail down the proper syntax.
Here's what a really basic example of what I would like to accomplish:
Choice 1 (variable A increases by 1) -> Next Passage
Choice 2 (variable B increases by 1) -> Next Passage
Choice 3 (variable C increases by 1) -> Next Passage
(A is highest) You prefer A
(B is highest) You prefer B
(C is highest) You prefer C
Hope that's clear.