Which continent has the most people?
a. africa
b. north america
c. asia
d. europe

The continent with the most people is the one that has the two countries with the biggest population: China and India - it's Asia, so the correct answer is C. This is true despite most of the North of Asia being scarcely populated.

In fact, it is also home to some other countries with big populations : Pakistan and Bangladesh

The study of where things are