Final answer:
Approximately 45.67% of males will develop cancer during their lifetimes, so the closest estimate provided for Canadians is 43%.
Step-by-step explanation:
The question pertains to the percentage of Canadians who will develop cancer during their lifetimes. According to studies, the probability that a male will develop some form of cancer in his lifetime is 0.4567, which can be approximated to around 45.67%. Given the provided options, the closest answer would be (c) 43% as the best estimate; however, it should be noted that this figure could vary based on new studies or data specific to Canada. Furthermore, rates might differ when considering both males and females together. Therefore, the provided statistics are an estimate and should be used as a general reference rather than a definitive figure.