How does rapid population growth affect education

It effects education because the more people the harder it is to learn. Let's say their is a group of 10 students and their is a group of 30 students, the group of 10 will learn better because their isn't as many people.

answer; i do believe its (b) 12.5 years of age;

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;