The student effectively incorporated relevant and appropriate source material in their essay, specifically focusing on the financial impact of Apple's acquisition of Beats Electronics. They utilize citations from credible sources, such as financial reports and market analyses, to support their arguments and provide context. However, the essay lacks a broader business context, as it does not identify direct competitors or industry benchmarks. Additionally, the student faile to clearly define some technical terms, such as the product position map, which could enhance understanding. Nonetheless, the academic tone and appropriate use of subject-specific terms contribute to a well-structured and professional analysis.