Final answer:
The flow of a paragraph depends on coherence and cohesion, facilitated by organized ideas, smooth transitions using transitional words and phrases, and a focused, unified topic.
Step-by-step explanation:
The quality of flow within paragraphs primarily stems from coherence and cohesion. Paragraph flow is achieved when ideas are organized in a logical manner and sentences transition smoothly from one to the next. To guide readers smoothly through the content, writers utilize transitional words and phrases. Additionally, a paragraph is most effective when it revolves around a single, clear topic, supplemented by relevant background and supporting details. Coherence is further reinforced through the use of transitional elements and subheadings that connect various sections, ensuring that the written piece is focused and easy for readers to follow. Visual aids can sometimes be employed to elucidate abstruse concepts and enhance understanding.