Final answer:
The stable fly, Melophangus ovinus, prefers the blood of cattle, deer, and humans.
Step-by-step explanation:
The correct answer is D. Melophangus ovinus. Melophangus ovinus, also known as the stable fly or biting house fly, prefers the blood of cattle, deer, and humans. This species is found worldwide and can be a significant pest to livestock and humans, causing irritation and transmitting diseases.
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