To preserve and restore the Union, and wanted to see the end of slavery.
<span>This is called eustress. The term was described by Hans Selye, which implies a beneficial level of psychological stress. This stress helps to nourish the feeling of fullness, fulfillment of positive goals or feelings. <span>It
is perceived as a factor of motivation or energy that allows the
achievement of objectives, for which their perception is positive and
beneficial.
I hope my answer can help you.
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The test statistics which will be used here is standard deviation.
<h3>What is standard deviation?</h3>
The standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance. The standard deviation is calculated as the square root of variance by determining each data point's deviation relative to the mean.
A volatile stock has a high standard deviation, while the deviation of a stable blue-chip stock is usually rather low.
Thus, Option D is true, as standard deviation is the test statistics which will be used here.
Learn more about standard deviation here,
brainly.com/question/13905583
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