Answer:
C. 1500 people per event
Explanation:
The probability of the asteroid hitting earth is one in 21,000.
Mathematically, that can be represented as .
assuming the impact could cause a death of 30,000,000.
The average death rate for this kind of event if it occurs can be got by multiplying the probability of the event occurring by the death rate.
= × 30,000 = 1,428.57
≈ 1500 people per event.<em> (an approximate answer was required by the question)</em>
This means that, approximately 1500 people will be killed if the event were to occur once.