What is the length of line segment CD with endpoints open paren negative 3 comma 2 close paren and open paren 2 comma 2 close paren as shown on the coordinate plane?

Both endpoints have the same y-coordinate, 2, so the segment is horizontal. Its length is the difference between the x-coordinates: 2 − (−3) = 5 units. Therefore, the correct choice is B, 5 units.

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