Why are transition words significant in writing?

Transition words are significant in writing because they serve as essential connectors that help organize thoughts and link ideas logically, which contributes to clarity. By using transition words, writers can guide readers through their arguments or narratives, showing how different points relate to one another. This logical flow aids in comprehension, making it easier for the reader to follow the writer's train of thought and understand the relationships between concepts, such as cause and effect, contrast, or sequence.

In contrast, while enhancing vocabulary use and enabling complex sentence structures can add to the richness of writing, they do not specifically address the organization and clarity that transition words provide. Similarly, improving reading speed is more about the overall composition and readability of the text rather than the specific function of transitions in guiding readers through the material. Thus, the primary role of transition words is to facilitate coherent and logical connections between ideas, making option B the most accurate choice.