A student is writing an essay titled 'The Impact of Digital Communication on Modern Manners.' Which of the following practices should the student avoid to ensure clarity and coherence?
A) Using specific examples of online interactions to illustrate points.
B) Clearly defining key terms like 'digital etiquette' at the beginning of the essay.
C) Introducing new, unrelated arguments in the conclusion.
D) Organizing paragraphs around distinct aspects of digital communication's impact.