A large company wants to find out what team-building activity its employees prefer. Which of the following samples can give the most valid generalization?
A. all employees who have worked in the company for 5 years or more
B. all 624 female employees in the company
C. 400 randomly chosen employees from the list of all the employees
D. a group with one member from each department
C. 400 randomly chosen employees from the list of all the employees
This sample includes a larger and more diverse group of employees from different departments and levels of experience, making the results more likely to represent the preferences of the company as a whole. Randomly choosing employees also helps eliminate bias and ensure a more accurate generalization.