A "legitimate concern" refers to a worry or issue that is reasonable and justifiable based on facts or evidence. It often arises in situations where there is potential risk or harm, prompting individuals or groups to take notice and seek solutions. For example, concerns about the safety of a product, such as toxic chemicals in toys, can lead to calls for regulation and testing. In discussions about public health, a legitimate concern might involve the spread of a disease, like COVID-19, where experts emphasize the importance of vaccination and preventive measures. Addressing legitimate concerns is crucial for informed decision-making and fostering trust within communities.