What is a pronoun used for in language?

A pronoun serves the function of replacing a noun in communication, which helps to avoid redundancy and maintain fluency in language. For instance, instead of repeatedly using a noun like "Maria" in a sentence, one can use the pronoun "she" to refer to Maria afterward. This not only simplifies sentences but also enhances their readability and clarity.

In contrast, the other options describe different parts of speech or functions: a word that describes an action typically refers to a verb, which conveys what the subject of the sentence is doing. A word that joins clauses relates to conjunctions, which are used to connect sentences or phrases. Lastly, a word that expresses strong feelings aligns with interjections, which convey emotional responses and are often used to express sudden feelings. Each of these categories plays a distinct role in language, but it is the pronoun that specifically replaces nouns, serving as a critical component in effective communication.