Identify which testing principle standardization, reliability, or validity- is being described in each of the following statements:
a._______ ensures that if a person takes the same test two weeks after taking it the first time, his or her score will not significantly change.
b. _______ ensures that a test or other measurement instrument actually measures what it purports to measure.
c. _______ ensures that the test has been given to large numbers of people to determine which scores are average, above average, and below average- -in short, which scores are representative of the general population.