Which of these countries was thought to be the most populated country during 2018?

a) China

b) India

c) Indonesia

d) USA

A) China 1.4 billion (India had 1.3 billion)

it is china

Explanation:

if we see China had a population of 1.42 billion, India had 1.33 billion, Indonesia had 264.16 million, and USA had 327.2 million

if we put the countries in order

China

India

USA

Indonesia

and if we see, China is still in the first place and India is in second place