There is a level of hostility below which _____ may be benign but above which it will be malign.

The difference between net sales and the cost of goods sold equals the _____

a. net profit before taxes b. total costs c. operating expenses d. gross profit

Explain in broad terms, using a sentence or two, what is meant by the "classical stopwatch study." To what extent is it still in use today?

What will be an ideal response?