AutoCAD has had the dreaded Model Space and Paper Space since R12. What is the main advantage of the system?

(c) It enables the CAD operator to set the scale of the

(c) It enables the CAD operator to set the scale of the

Drawings done in paper space you need to draw M1:1 in mm if it is to print to scale 

http://autocadcentral.com/Tutorials/Lesson%2010/lesson10.htm

C it enables you to put different scales in paper space, so you can draw everything1;1, simple!

I would say the most accurate answer is

(c) It enables the CAD operator to set the scale of the

 

the answer is C.  To enable the CAD operator to set the scale of the .....

Same as others, my answer is option (C)

The model paper space is one or the most important features od CAD as it enables you to draw every thing once and then you can create as much views on papers space as required by any scale required. So it is important feature when you want to create a set of drawings for a project.

Thanks for Invitation i would prefer the option-C which is "It enables the CAD operator to set the scale of the.....

C is the correct option that it enables CAD operators to set scale of drawing.