Which of the following words fits the given analogy? Tractor : Trailer ::…

In an analogy question, you must first identify the exact relationship linking the first pair of words, then choose the option that reproduces the same relationship for the second pair. Here, the relationship is between a vehicle and the load it pulls (tows) behind itself — not just any word associated with the vehicle.

A tractor is a vehicle that pulls a trailer behind it. Applying the same puller-to-towed-load relationship to a horse, the load it pulls behind it is a cart.

• stable — this is where a horse lives; it is a shelter, not a load the horse pulls.

• saddle — this is worn on the horse's back for riding; it is not towed behind the horse.

• engine — this is a power component fitted inside a vehicle; it is not something pulled behind one.

Only cart preserves the puller : towed-load relationship, matching tractor : trailer.