It's all the above. The scientific method is important to make these kind of finds.
I believe the answer is D. The birth rate in India is greater than in china.
This is because of the "one-child policy" that's enforced in China.
In chapter 7 Ender begins to feel homesick because he is worried about having friends that are girls will ruin his street cred. He also misses his parents and friends.
No no, I'm not joking that is the result I got from googling it and from reading it myself a year back.
The Answer is B because that answer can create an image in your head from reading it
I’m not completely sure if this is correct but i’m going with D