Final answer:
The correct word to complete the sentence is 'peces'. The habitats of the fish are seas, lakes, and streams.
Step-by-step explanation:
The correct answer to complete the sentence is D. peces.
Los hábitats de los peces son mares, lagos y arroyos.
In this sentence, 'hábitats' means habitats, 'los peces' means the fish, 'mares' means seas, 'lagos' means lakes, and 'arroyos' means streams. The sentence is stating that the habitats of the fish are the seas, lakes, and streams.
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