As towns grew, the group that was most likely to take responsibility for making improvements of the town were noblemen on whose land the town was built. The correct answer should be D. This is because at the time, these rich people would grant parts of their land to the government to build whatever it liked on it, and then they would be the ones praised for the advancement of the town they lived in. They would be the ones whom everyone thanked for the betterment of the town at the time. Nowadays, it is a bit different, although still quite similar.