Correct option is D
The correct answer is: (d) Bitumen, Coal Tar
Bitumen: Derived from petroleum, bitumen is a thick, black, sticky liquid that acts as a binder in asphalt concrete used for paving roads.
Coal Tar: A byproduct of coal processing, coal tar is also a thick, black liquid historically used for road paving. However, due to environmental concerns, bitumen has become the preferred choice in most places.
Therefore, based on their origin and use in road construction, Bitumen and Coal Tar are the most suitable options for X and Y, respectively.