The vertices of a square are located at (−4, 0), (−7, 0), (−4, 3) and: a. (0, 7) b. (-7, 3) c. (0,3) d. (4,3)

The points  (−4, 0) and  (−7, 0) are placed on x-axis, and distance between these points is 3 units, then the square side has length 3 units. Since the third vertex is at point (−4, 3) (this point is at 3 units distance from (-4,0)), then the fourth vertex must be at point (-7,3) (this point is at 3 units distance from (-7,0)).

Correct choice is B.