Transitions function in paragraphs primarily to?

Transitions are essential in writing as they serve to link ideas within a paragraph or between paragraphs, thereby guiding the reader through the text seamlessly. The role of transitions is to create coherent flow, making it easier for the audience to follow the development of ideas or arguments presented. By using transitional words or phrases, a writer can indicate relationships such as addition, contrast, or cause-effect between sentences and paragraphs. This linkage helps clarify connections and enhances overall readability, ensuring that the main points are effectively communicated to the reader.

In the context of your question, while expanding on ideas and introducing new topics can be elements of a well-structured piece, they do not specifically describe the primary function of transitions in linking concepts. Transitions focus on providing clarity and continuity, making them integral to the construction of logical arguments and narratives.