Final answer:
A nursing student shows an understanding of paragraph grammar by changing paragraphs when the main idea changes, structuring paragraphs with focus and evidence, and editing for conciseness.
Step-by-step explanation:
The nursing student displays an understanding of the rules of grammar regarding paragraphs primarily by changing paragraphs when the main idea changes. This practice is crucial for maintaining clarity and coherence in writing. An effective paragraph comprises a main point supported by evidence, follows a logical organization, and is of suitable length to explore the idea without being overly lengthy or too brief. It often begins with a topic sentence, which acts as a mini-thesis to keep the paragraph focused. The overall structure of an essay should ensure that each paragraph straightforwardly relates to the thesis statement - serving the essay's purpose and argument.
Editing for conciseness involves eliminating unnecessary words and ensuring that each word pulls its weight in conveying the message. Furthermore, the presence of transitions within and between paragraphs improves the readability of the text, helping the reader understand the connection between points.