Answer:
B. 3 units; Quadrant 1
Step-by-step explanation:
The line segment is found within: M = (2,4) and N = (2,7)
The line segment is on the line x = 2.
The length of the line segment is 7 - 4 = 3 units.
Points M =(2,4) and N = (2,7) are in the first quadrant.