Which of the following would be the best reference material for a researcher looking for statistics over different demographics in various countries?
A. An almanac
B. An index
C. An encyclopedia
D. A dictionary
The best reference material for a researcher looking for statistics over different demographics in various countries would typically be an almanac. Almanacs often provide comprehensive and up-to-date statistical information, including data on demographics, geography, and various other topics related to different countries.
Therefore, the correct answer is option A. An almanac.
Therefore, the Correct Answer is A.