The Importance of Motivation Is Suggested by Findings That Most

The importance of motivation is suggested by findings that most people believe they could give as much as _________ percent more effort at work than they now do with no one, including their own supervisors, recognizing any difference; and they also believe they could give _________ percent less effort with no one noticing any difference.

A) 2 to 6; 2, 6
B) 8 to 10; 8, 10
C) 10 to 15; 10, 15
D) 15 to 20; 15, 20
E) None of these