Final answer:
The last sentence in section 3 increases coherence with its effective use of transitions.
Step-by-step explanation:
The last sentence in section 3 increases coherence with its effective use of transitions. Transitions are words or phrases that help to establish connections between sentences, paragraphs, and sections of text. They guide readers through the flow of ideas and make the writing more cohesive. By using transitions, the writer creates a smooth transition between ideas, making it easier for the reader to follow along.