Correct Answer: (a) 2027
Note: According to the World Population Prospect, 2019 report published by the Population Division of the United Nations Department of Economic and Social Affairs, India's population is likely to exceed that of China by the year 2027. According to this report, the world population is expected to increase by two billion people in the next 30 years, from 7.7 billion currently to 9.7 billion by 2050.
