Explanation:
Irregular plural nouns are nouns that do not become plural by adding -s or -es, as most nouns in the English language do. You're probably familiar with many of these already. For example, the plural form of man is men, not mans. The plural form of woman is women, not womans.
Answer:
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It wold be D, like Nochillalisa said. There's more than 1 man. If it was man, then there would be no answer. But it's men, so it D.
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