The correct answer is: A. 275x25x13 cm
A wooden sleeper is a rectangular support beam that is used to hold railway tracks in place. They are typically made of wood, but can also be made of concrete or steel. The standard size of a wooden sleeper for Broad Gauge track is 275x25x13 cm.
The length of a sleeper is important because it determines the spacing between the rails. The width of a sleeper is important because it determines the amount of ballast that can be placed on top of it. The depth of a sleeper is important because it determines the amount of support that the sleeper can provide to the rails.
The other options are incorrect because they do not match the standard size of a wooden sleeper for Broad Gauge track.