Question:medium

Complete the analogy by choosing the option that best fits.
Incubator : Infant :: Greenhouse : ?

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Think about what an incubator does for a newborn, then ask what a greenhouse does for the same kind of thing in plants.
Updated On: Jul 21, 2026
  • Parasites
  • Worms
  • Puppies
  • Saplings
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The Correct Option is D

Solution and Explanation

This is a relationship-based analogy question. We first read the given pair "Incubator : Infant" and describe the connection between the two words in a simple sentence, then look for the option that creates the same sentence with "Greenhouse".

  1. Parasites: A greenhouse is not built to raise or protect parasites, so this pair does not carry the same nurturing relationship.
  2. Worms: Worms may live in soil, but a greenhouse is not designed around growing or protecting worms, so this option breaks the pattern.
  3. Puppies: Puppies are young animals, and a greenhouse plays no part in their growth, so this pair does not match the incubator-infant relationship.
  4. Saplings: A greenhouse is a warm, controlled structure built specifically to protect and nurture young, delicate plants until they are strong enough to survive outside, exactly as an incubator protects a fragile infant.

The sentence "an incubator is a protected space that helps a fragile infant grow" becomes "a greenhouse is a protected space that helps a fragile sapling grow" when we substitute the last option, and that sentence holds true.

Let's summarize:

  • An incubator nurtures a fragile infant in a controlled environment.
  • A greenhouse plays the same nurturing role for young, delicate saplings.
  • Parasites, worms, and puppies have no such controlled-growth relationship with a greenhouse.

So the correct completion is "saplings".

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