Answer:
A. Surveying every 25,000th number
Step-by-step explanation:
If the numbers of people are assigned in order of 1 to 1 000 000 then the smallest sample would be obtained by conducting surveys every 25 000th numbers.
The calculation of the sample size would be made by dividing 1 000 000 by 25 000.
[tex]\frac{1000000}{25000}= 40[/tex]
Therefore, the smallest sample selected would be 40 people.
If the surveys were made every 25th numbers, then the sample size would be:
[tex]\frac{1000000}{25}= 40000[/tex] people