The answer is C merit became the basis of all civil service jobs
I think the correct answer is B.
Answer:
C. Suppressing white blood cells called lymphocytes
Explanation:
Lymphocytes are white blood cells that are also one of the body's main type of immune system. A low lymphocyte can be caused by intense physical exercise, severe stress or malnutrition.
Karen had stressed himself severely hence the reason for the Iow lymphocyte which led to the flu.
More it helps you get your feelings out
Answer: SAMPLE.
Explanation: He obviously cannot study every 12th grader, so instead he will select a smaller SAMPLE of seniors to study.
Sample in research methodology is defined as a subset of a population selected for measurement, observation or questioning, to provide statistical information about the population. A sample is referred to as an unbiased estimator of a population.