As of the year 2000, the human population was approximately

a. 6 billion
b. 3 billion
c. 1 billion
d. 10 billion

hello there

your answer is :10 billion

EXPLATION:

the dawn of the first millennium A.D. is  the world's population was around 300 million people around . Because of the population had risen by as little as to 10 million. And well into the second millennium, it grew less than 0.1 percent each year.

i hope this helps you out

have a great evening

FaithRawlins14