Which of the following is an example of a count noun?

A count noun is a word that denotes something that can be counted as individual items, allowing it to have both singular and plural forms. The word "child" exemplifies this concept, as it refers to a single young human being and can easily be pluralized to "children" when referring to more than one.

In contrast, the other options represent non-count nouns, which refer to substances, concepts, or collective units that don’t have a distinct countable form. For instance, "water" and "rice" both represent mass nouns that cannot be individually counted in the same way as "child" can—they refer to quantities that are measured rather than counted. Similarly, "information" is also a non-count noun, as it represents a collection of facts or data that is treated as a whole rather than as individual items. Thus, "child" stands out as the only option that fits the criteria of a count noun, demonstrating its ability to signify individual instances that can be quantified.