A Company Has 500 Employees and Would Like to Select

A company has 500 employees and would like to select a simple random sample of 25 of them for a study. Of the following, only one fits the definition of a simple random sample. Which one is it?

A) Randomly choose one person whose last name begins with A, one with B, and so on, omitting X because it's least common.
B) Randomly choose 25 pages from the employee directory, then choose the first person listed on each of those pages.
C) Number the employees from 1 to 500 based on seniority and randomly choose one person from the first 20 names on the list, one from the next 20, and so on.
D) Number the employees from 1 to 500 in random order and choose the first 25 names on the list.

Correct Answer:

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