Final answer:
The ACM code of ethics principle that concerns the quality of life of all people is Code 1.1, which focuses on contributing positively to society and human well-being.
Step-by-step explanation:
The general ethical principle from the ACM code of ethics that concerns the quality of life of all people is Code 1.1: Contribute to society and to human well-being, acknowledging that all people are stakeholders in computing. This principle emphasizes the social responsibility of computing professionals to ensure that their work contributes positively to society and does not harm the public well-being. As such, it aligns with the broader commitment to preventing software from diminishing the quality of human life, impinging on privacy, or harming the environment, which is outlined in the IEEE-CS/ACM Joint Task Force on Software Engineering Ethics and Professional Practices. Ethical considerations like these are not only important in the field of computing but also reflect a greater philosophical endeavor to find a principle that fosters the core values of the human community and guides citizens and governments toward moral conduct.