Astress test was found to actually measure sleep deprivation. the stress test would lack:

I believe the answer is: Reliability

Reliability in a test could only be achieved if the result of the test would typically resulted in the same measurement if being taken by different people. The effect of sleep deprivation would be drastically different depending on the physical and genetic composition of the subject, so the test would not be reliable.

answer: ‘no one should be discriminated against because he or she is not from a minority group’

because—> affirmative action means ‘a policy or program that provides opportunities for traditionally disadvantaged groups to them overcome the effects of discrimination’