What is the role of transitions in writing?

• A. Transitions introduce the paragraph's main idea.
• B. Transitions link ideas within and between paragraphs to maintain coherence.
• C. Transitions are used only at the end of a paper.
• D. Transitions replace topic sentences entirely.

Answer: (B)

Transitions serve to connect ideas within sentences and across paragraphs, guiding the reader smoothly from one thought to the next and keeping the whole piece coherent. They act as bridges that signal how ideas relate—whether you’re adding information, showing contrasts, comparing concepts, or explaining cause and effect. This makes the argument easier to follow and helps readers see the logical flow of your writing.

That’s why this option is the best: it captures the core function of transitions as connectors that knit ideas together throughout the entire piece, not just at one point or in isolation. Transitions aren’t about introducing the paragraph’s main idea—that’s typically the job of the topic sentence—and they aren’t only at the end of a paper. They also don’t replace topic sentences. Instead, they work alongside topic sentences to create a seamless flow, guiding the reader from one idea to the next.