The meeting that jump-started the expansion of international data collection on cancer rates occurred in which year and city?

• A. 1946 in Copenhagen
• B. 1946 in Paris
• C. 1950 in Copenhagen
• D. 1950 in Paris

Answer: (A)

The key idea is recognizing a watershed moment in cancer epidemiology: a postwar meeting that launched international efforts to collect and compare cancer incidence data across countries. The gathering in Copenhagen in 1946 brought together researchers to agree on standardized methods for recording cancer cases and sharing statistics. This set the foundation for the expanded, coordinated data collection that followed, enabling clearer comparisons of cancer rates worldwide and tracking trends over time. Because this meeting exactly matches the milestone described, the correct choice is the one that cites 1946 in Copenhagen. The other options describe different years or cities, but they don’t reflect the initial meeting that jump-started international cancer data collection.