An analogy is a comparison of two things in order to show ways in which they are different or alike

The correct answer is alike.

Explanation:

The analogies are very useful when we want to compare two things in the way they function one to another. For instance, if we want to compare the function that a bird has in relationship with the air. We can make the analogy of the fish with the water. So, water is to fish as air is to bird.

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