What is the function of conjunctions in writing?

Conjunctions serve a vital role in writing as they are necessary for linking words, phrases, or clauses within sentences, enabling clear and coherent expression of ideas. By connecting two sentences or ideas, conjunctions help to create complex and compound sentences, facilitating the flow of thought and allowing for more nuanced and comprehensive communication.

For example, when you use conjunctions such as "and," "but," or "because," you can elaborate on relationships between concepts, show contrast, or indicate causality. This connective function is essential for structuring sentences in a way that elucidates the relationships among various elements of the text, thus enriching the reader's understanding.

The other choices do not accurately reflect the primary function of conjunctions. Enhancing vocabulary pertains more to the choice of words rather than connecting ideas. Indicating action is a function more associated with verbs. Expressing emotions typically involves adjectives or adverbs rather than conjunctions. Therefore, the pivotal role of conjunctions as connectors of ideas solidifies the correctness of the selected answer.