The worldwide population is estimated to be around by the year 2050.
a. 9 million
c. 9 trillion
b. 9 billion
d. 9.9 trillion

The worldwide population is estimated to be around b. 9 billion by the year 2050.

World population, is a count of the number of humans currently living on our planet.

As per the United Nations, the current world population as of 2019 is around 7.7 billion and is been projected to reach nearly 9.8 billion by the year 2050.

Ans) B 9 billion