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The correct answer is shrewdness.
  
Acumen
  
A. first course 
B. distress 
C. shrewdness 
D. anxiety 
The correct answer is (C) Shrewdness; superior mental acuteness; keen discernment, penetrating insight; perceptiveness; 
 
Acumen comes from Latin acuere (to sharpen).
 
Examples of use:
 
- During his career, he displayed a remarkable acumen in business matters.
 - Business acumen is only trait necessary for great success in business. 
  
  
   
 
 
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