Answer: D) Quadrant 4
The diagram shows the triangle is in quadrant 1
If we shift every point 6 units down, then the triangle will move to quadrant 4.
The quadrants are set up so that quadrant 1 is in the northeast corner. Then you go counterclockwise to get the other quadrants. So Q2 is in the northwest corner, Q3 is in the southwest corner, and Q4 is in the southeast corner.