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.
<em>(1.) Ural Mountains</em>
<em>Hi ! </em>
<em>The </em><em><u>Ural Mountain</u></em><em>s is the correct answer</em>
<em>
The Ural Mountains are the border between Europe and Asia</em>
<em>Good luck !</em>
Answer: they can both provide information about a family’s past