Which of the following most logically completes the argument below?
Traditional treatments that fight cancer through the application of radiation and destructive chemicals pose a significant problem: how to destroy the cancer without losing the patient. For some individuals, enhanced genetic screening methods may reveal predisposition to the disease. Preventative treatment loses effectiveness upon the appearance of cancer cells. Therefore, genetic screenings will be especially effective for patients who _______.
【选项】
investigate their risk before they have any indication that they may have a predisposition for developing cancer
选项是否正确？