Run the Con as a workbench: the con's parts sit in a tray, dragged into the distractor's slot where they click together into an assembled trap answer — the construction is physical, not a form of dropdowns.

Run the Con
build The Grinder's plant · apprentice
the clean question · real answer −5
A line's slope is 3 and passes through (2, 1). Find the y-intercept.
the distractor · drag his parts in
answers the sub-step + → 3 ▸ one slot open
click. the trap is seating together.
his tools · the tray
flips a sign off by a factor almost-right value wrong-question answer
Ship it
a bench, not a dropdown form · fails read "the workshop wouldn't ship this," never "wrong"