In a certainin linear pair, one angle measures three less than twice as much as the other. choose the diagram that you would draw to represent this linear pair.

C is correct B is wrong 

From the 2 angles 
one angle - x° 
other angle - (2x - 3)°
diagrams A and D are wrong as they show that the angles sum up to 90°, whereas in linear angles the adjacent angles should sum up to a straight line that's 180°
diagram C is wrong as they haven't depicted the angles correctly.
diagram B 
x + 2x-3 = 180
3x = 183
x = 61
other angle 61*2 - 3 = 119
this is the correct diagram as the angles in the diagram look simiar to the angles calculated.