For a text on social media use and its impact on friendships, the Cause and Effect organizational pattern would be the most effective. This pattern allows the author to explore how social media use leads to specific effects on friendships, such as changes in communication, relationship quality, and social interactions. By clearly presenting the causes (like increased online interaction or superficial connections) and their effects (such as feelings of loneliness or deeper connections), the author can provide a comprehensive understanding of the topic.
While Comparison and Contrast could also be useful, especially if discussing different types of social media or varying impacts, the cause and effect framework would likely provide a clearer and more direct analysis of the relationship between social media use and friendship dynamics.