Which of the following is the correct plural form of "child"?

The correct plural form of "child" is "children." This word follows an irregular pluralization pattern in English, where instead of simply adding an "s" or "es" to the end of the base word, the word changes form entirely. In this case, "child" transforms into "children," reflecting a common irregular pluralization seen in a few other nouns in the English language as well.

This transformation happens because English has a variety of roots borrowed from different languages, and "children" comes from Old English. The use of a completely different word in the plural form is a feature of these irregular nouns. Understanding these variations is important for mastering English grammar, as it helps in recognizing the exceptions to standard pluralization rules.