Final answer:
Primary prevention is aimed at people who do not have a particular illness but are at risk of developing it.
Step-by-step explanation:
The level of disease prevention aimed at people who do not have a particular illness but are at risk of developing it is Primary prevention. This approach focuses on preventing the onset of disease by managing risk factors and promoting a healthy lifestyle. For instance, lifestyle changes like a balanced diet, regular exercise, and avoiding tobacco use can significantly reduce the risk of chronic noninfectious diseases such as cardiovascular diseases, type 2 diabetes, and various forms of cancer, many of which are the top causes of deaths in developed countries.Primary prevention focuses on preventing a disease from occurring in the first place by targeting the underlying risk factors. This can be achieved through lifestyle modifications, such as adopting a healthy diet, exercising regularly, and avoiding tobacco and excessive alcohol use.