The manager of a large chain of stores wants to know if her employees would be in favor of opening the store one hour earlier in the morning. Which sampling method will most likely result in a biased sample?

A.
The manager visits every store at closing time and selects all the employees there.

B.
The manager programs her computer to randomly select employee ID numbers.

C.
The manager selects every 10th name on her list of employee names.

D.
The manager randomly selects 3 employees from each store.

Question

The manager of a large chain of stores wants to know if her employees would be in favor of opening the store one hour earlier in the morning. Which sampling method will most likely result in a biased sample?	
 
 A.
The manager visits every store at closing time and selects all the employees there.
 
 B.
The manager programs her computer to randomly select employee ID numbers.
 
 C.
The manager selects every 10th name on her list of employee names.
 
 D.
The manager randomly selects 3 employees from each store.