I believe your answer is D... good luck my friend :D
Heating homes- increase for coal
Textile factories- increase for cotton
Four wheeled automobiles- increase for oil
Of the four options, only baths belong to a water system of an estate, so the correct answer is C.
Aviary is a birdcage, colonnades are supporting columns and wrestling grounds are areas used for wrestling.
The answer is D. 100%!! :)