When facing the accusation that minors buy tobacco products, the core points of the defense can be centered around the following aspects: 1. **Purpose of market research**: Emphasize that the purpose of conducting market research is to understand and identify consumption trends among minors in order to provide data support for future policy making and health education. Explain that the survey is for the purpose of promoting public health and reducing the smoking rate among minors, rather than for personal or commercial gain. 2. **Compliance and ethics**: Explain that relevant laws and regulations are strictly followed during the market research process to ensure that all participants are informed and agree to participate in the survey. It can be stated that internal policies and procedures have been formulated to prevent minors from buying tobacco products, demonstrating the company's sense of responsibility and concern for society. 3. **Professionalism and scientificity**: Emphasize that the design of the survey is conducted by professional market researchers, following scientific methods and ethical standards to ensure the authenticity and reliability of the data. Relevant industry standards can be cited to show that the behavior is in line with professional ethics. 4. **Social responsibility**: Discuss the company's efforts to promote public health, including educating the public about the dangers of smoking and supporting smoking cessation programs. It shows that the company does not support minors smoking, but is committed to preventing and reducing youth smoking. 5. **Minor protection**: Mentioning that additional measures were taken during the investigation to ensure that minors were not harmed, such as using an age verification system to prevent minors from participating. Through these arguments, a social responsibility-oriented defense can be constructed, emphasizing the legitimacy and necessity of the investigation while expressing concern for the health of minors.