Final answer:
The correct answer is option 2) Periodically repeated.
Step-by-step explanation:
Screening for diseases, such as cancer, should typically be a periodically repeated event, rather than a one-time affair. This is because the onset of diseases can occur at any time and regular screening increases the chance of early detection. Early detection can lead to more effective treatment and better outcomes for individuals.
However, it's important to weigh the potential benefits of early detection against the potential risks of the screening procedures themselves. Risks might include false positives, unnecessary anxiety, excessive radiation, invasive tests, and the cost or pain associated with screening. Therefore, the frequency and type of screening will vary based on individual risk factors, family history, and medical guidelines.
Ultimately, following the advice of a healthcare provider who understands an individual's medical history and risks is essential. Providers tailor their recommendations to ensure that the benefits of screening outweigh the risks for each person.