Which option allows the sketch edge to be made at the angle of the y-axis?

The choice that allows the sketch edge to be made at the angle of the y-axis is the option that refers to a vertical orientation. In a 2D sketch environment, the y-axis is represented as the vertical line, which means that any sketch edges drawn in a direction parallel to the y-axis will inherently be vertical.

When creating sketches in CAD software like Solid Edge, understanding the coordinate system is crucial. The vertical option explicitly defines lines that extend straight up and down, maintaining alignment with the y-axis. This gives designers the ability to ensure that elements within their sketches are accurately positioned according to their intended orientation.

In contrast, the horizontal selection pertains to sketch edges that run parallel to the x-axis, while diagonal would imply lines at an angle that do not adhere strictly to either coordinate line. The choice of "None of the above" does not apply, as there is a clear option that corresponds to the y-axis alignment.