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

A mass noun, also known as an uncountable noun, refers to something that cannot be counted individually and typically does not have a plural form. The term encompasses items that are perceived as a whole or a mass rather than as distinct units.

In this case, "information" fits the definition of a mass noun because it represents a collection of facts or data that cannot be counted as individual items. You can't say "informations" or put a number in front of it like you can with count nouns. It is treated as a singular entity, regardless of how much information there is.

In contrast, "children," "teabags," and "apples" are all examples of count nouns. You can count each of these items individually—there can be one child, two children, a certain number of teabags, and so on. This ability to quantify them in discrete units is what distinguishes them from mass nouns.