Bird : Fly :: Fish : ?

**The reasoning** This is an **analogy question** — you're looking for the relationship between the first pair, then applying that same relationship to the second pair. The pattern is: **Bird : Fly** What does a bird do naturally? It flies. That's its primary mode of movement. So the question becomes: **Fish : ?** What does a fish do naturally? It swims. That's its primary mode of movement in water. The relationship is: **Animal : Its natural method of movement** Therefore, Fish : **Swim** completes the analogy perfectly. **Why the wrong options tempt you** - **Run** — Some animals run, but fish don't have legs. This might trap you if you're thinking of general movement without considering what fish actually do. - **Climb** — Fish don't climb; they lack limbs for this. - **Crawl** — Some fish can wiggle on land briefly, but this isn't their natural, primary movement. **Quick takeaway** In analogy questions, identify the *specific relationship* in the first pair (here: animal → its main way of moving), then find the option that mirrors that exact relationship in the second pair.