A marble tile would feel cold as compared to a wooden tile on a winter morning, because the marble tile
$(a)$. is a better conductor of heat than the wooden tile.
$(b)$. is polished while wooden tile is not polished.
$(c)$. reflects more heat than wooden tile.
$(d)$. is a poor conductor of heat than the wooden tile.

A marble tile is a good conductor of heat as compared to a wooden tile. So, a marble tile feels colder than a wooden tile in winter.

So, option $(a)$ is correct.