Cocoon protects caterpillar during its transformation.
Meaning: The cocoon keeps the caterpillar safe while it changes into a butterfly.
Choice of Words: Cocoon is a protective covering that a caterpillar makes around itself before it transforms into a butterfly. Protects means to keep safe from harm or danger. Caterpillar is the larval stage of a butterfly. During means at the time of something happening. Transformation means a change in form or appearance.
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