The line containing the points \((-2, 3)\) and \((2, 3)\) is a horizontal line at \(y = 3\). When this line is reflected across the x-axis, all the points on the line will change their y-coordinates to their negatives.
Thus, the points \((-2, 3)\) and \((2, 3)\) will be reflected to \((-2, -3)\) and \((2, -3)\), respectively. The new line will still be horizontal, but it will be at \(y = -3\).
To find the length of the reflected line segment between the two reflected points, we can calculate the distance between them:
The distance formula for two points \((x_1, y_1)\) and \((x_2, y_2)\) is given by: \[ \text{Distance} = |x_2 - x_1| \]
Substituting in our points: \[ \text{Distance} = |2 - (-2)| = |2 + 2| = |4| = 4 \text{ units} \]
Thus, the length of the reflected line segment is 4 units.
The correct response is: 4 units.