Answer: A.8000
Step-by-step explanation:
In statistics , the largest possible sample gives the most reliable results.
[ Since a large sample could have more variation as compare to the small sample.]
Given : A a population contains 80,000 people.
All else being equal, a study based on a population sample that includes .
Given sample sizes : A.8000 B.8 C.800 D.80
Clearly 8000 is the largest number .
It means numbers of respondents would be the most reliable = 8000
Hence, A is the correct answer.