Final answer:
The correct pair of words that completes the analogy is fish : ocean.
Step-by-step explanation:
The correct pair of words that completes the analogy is fish : ocean.
In the given analogy, the relationship between 'sea' and 'clam' is that the clam lives in the sea. Likewise, the relationship between 'fish' and 'ocean' is that fish live in the ocean.
Therefore, option d. fish : ocean is the correct choice.
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