Final answer:
John, a 65-year-old Black man, is most likely to develop prostate cancer due to risk factors such as age and African ancestry; however, screening methods remain debated due to potential overdiagnosis.
Step-by-step explanation:
The man most likely to develop prostate cancer, given the options provided, is John, a 65-year-old Black man. The risk factors for prostate cancer include older age, a family history of prostate cancer, and African ancestry, which John represents. Other changeable risk factors include a diet high in meat, a sedentary lifestyle, obesity, and high blood pressure. Early detection methods, like the PSA and PCA3 tests, are controversial due to potential overdiagnosis and overtreatment, leading to unnecessary side effects. These factors contribute to the assessment of risk and the decision regarding screening for prostate cancer.