The significance of a well-recorded health record mainly lies in: 1. It can help health managers to comprehensively and systematically understand the health problems of residents and the related background information of their illness; 2. It helps to promote the standardization of community health services; 3. It is helpful to comprehensively evaluate the health problems of community residents; 4. It is helpful to make an accurate and practical health care plan, make rational use of the limited health resources in the community, and improve the management level of community health services; 5. It can be used to evaluate the service quality and technical level of health managers, and sometimes it can be used as a legal basis for handling medical disputes; 6. The information in health records can be used as an important channel for the government and medical management institutions to collect primary medical information, and can also provide timely and accurate health information for residents in the emergency treatment of public health emergencies; 6. Residents' health records are important reference materials for medical teaching and scientific research. So choose B.