What do nouns represent in a sentence?

Nouns serve a crucial role in sentence structure by representing people, animals, concepts, or things. They are the foundational building blocks of sentences, identifying subjects and objects, and allowing readers to understand who or what is being discussed. For instance, in the sentence "The dog barks," "dog" is a noun indicating the animal performing the action.

Understanding that nouns encapsulate these elements helps clarify the function and importance of nouns in effective communication. Other options focus on different parts of speech or functions within a sentence: actions are typically conveyed by verbs, modifiers enhance or describe nouns and other elements, and words that replace nouns are known as pronouns. This distinction highlights the unique role of nouns in sentence construction and communication.