What does it mean when a paragraph has unity

It has three main parts; an introduction, a body of the paragraph and a conclusion. In other words, it has a topic sentence, a few supporting sentences, and a concluding sentence. Unity in a paragraph means that the entire paragraph should focus on one single idea.

the correct answer is "dissent"

explanation:

because dissent is when one or more judges express disagreement with the majority in court, in specific legal systems.   an   argument in opposition is presented to the court, with a different interpretation, or application.