Final answer:
The correct sentence that uses irregular nouns is: The men, women, and children arrived and were reunited with their families.
Step-by-step explanation:
The correct sentence that uses irregular nouns is: The men, women, and children arrived and were reunited with their families. In this sentence, the irregular noun 'children' remains the same in its plural form, while the regular nouns 'men' and 'women' also stay the same. The possessive pronoun 'their' is used to show that the families belong to the men, women, and children. The other options use incorrect plural forms or incorrect possessive forms.
Learn more about Irregular nouns