At which rate of population growth is the supply of earth expected to be used up the soonest
a. no growth
b. low growth
c. average growth
d. high growth

At High growth rate population the supply of earth expected to be used up the soonest.

Explanation:

High growth of population leads to an exponential increase in the population numbers.

For example, the high growth in a family of 2 will lead to more 2 children and the cycle continues. There is growth in a geometric fashion in multiples of 2 like 2, 4, 8, 16, 32. This will lead to strain on the natural resources and lead to their depletion.  

At high rate of population growth the natural resources of Earth are expected to be depleted the fastest.

looks like the answer is     c     to me!