What is the correct plural form of the word "child"?

The correct plural form of the word "child" is "children." This word follows an irregular pluralization rule in English. Unlike regular nouns that typically form their plurals by adding "-s" or "-es" (such as "cat" becoming "cats" or "box" becoming "boxes"), "child" undergoes a change in the vowel sound to become "children." This pattern is common with certain nouns in English that do not adhere to standard rules, making it essential to remember these exceptions.

In this case, the other options do not conform to standard English pluralization rules. "Childs," "childes," and "childrens" do not represent accepted forms in English grammar. Therefore, "children" stands as the only accurate plural for "child," showcasing the diverse ways nouns can change in number.