How do transitions enhance a piece of writing?

Transitions enhance a piece of writing primarily by connecting ideas and improving flow. They serve as bridges between thoughts and sections, guiding the reader smoothly from one point to the next. This connection helps to create a coherent narrative or argument, making it easier for readers to follow your line of thinking and understand how different parts of the text relate to each other. Well-placed transitions contribute to the overall clarity of the writing, allowing ideas to build on one another logically and effectively.

The other choices do not capture the primary role of transitions. Adding more characters is relevant in storytelling but does not pertain to writing techniques for clarity and organization. Improving grammar is essential for a polished piece of writing but is a separate aspect from the function of transitions. Summarizing information is important for condensing content, but it does not involve linking ideas or enhancing the flow of a narrative. Thus, the function of transitions is specifically to connect ideas and improve the flow of writing, making that choice the most accurate.