Which of the following qualities do china and india have in common?

Answer: D
Explanation: I eliminated the ones i knew were wrong then i got the answer
Answer:
Both China and India have populations that are over one billion inhabitants.
Explanation:
Both China and India are the two most populous countries on the planet, in addition to being the only countries that exceed one billion inhabitants.
China has about 1,401,000,000 inhabitants, which account for 18% of the total world population. India, in turn, has about 1,360,000,000 inhabitants, which make up 17.5% of the world total.
It is estimated that by 2030 India will surpass China in the number of settlers, thus becoming the most populous country in the world.