The Best Option Would Be D Because British Museum-Egyptian Pyramids Would Be Helpful, But National Geographic:Egyptian Pyramids, Facts, Photos, And Diagrams Has That And More. C I Wouldn't Find Very Helpful, Because It's Just Focused On Pyramids, And B Is Totally Out Of The Picture. Hope That Helps!
Explanation: The Census Bureau estimated today that the world's population would reach 6.2 billion by the year 2000, an increase of 27 percent over the 1985 figure.
The best solution in one where the solution is being made strictly on the basis of "pros and cons" would be to pick the solution where the pros, outweigh the consequences. In other words pick a solution with more pros than cons.