The move ΔLOW → ΔL"O"W" looks like a translation of the triangle. Two moves that could replace the translation to achieve a similar effect are:
- A reflection across parallel lines followed by a reflection across parallel lines (which effectively results in a translation).
- A counterclockwise rotation of 180 degrees.
Both options can yield an equivalent position for the triangle after the translation.
Thus, the best answer would be: A reflection across parallel lines followed by a reflection across parallel lines.
Or, alternatively:
A counterclockwise rotation of 180 degrees.
So, either option works as a way to replace the one translation move.