The line segment has the same length after it is reflected across the x-axis. Therefore, the length of the reflected line segment is still 6 units. Therefore, the correct answer is 6 units.
are you sure
Yes, I am sure. When a line segment is reflected across the x-axis, the y-coordinates of its endpoints are negated but the x-coordinates remain the same. In this case, the y-coordinate of the first endpoint (0, 5) becomes (0, -5), and the y-coordinate of the second endpoint (6, 5) becomes (6, -5). The distance between these two reflected points is still 6 units. So, the length of the reflected line segment is 6 units.
