The document discusses the key principles of effective communication - completeness, consideration, conciseness, concreteness, clarity, courtesy, and correctness. It then analyzes a commercial for the drink Nesvita, noting that it promotes bone health awareness for women, emphasizes how vitamin D keeps bones strong, and only includes relevant information. The commercial explains how drinking Nesvita can help reduce the risk of bone diseases by keeping women's bones strong so they can be successful.