Why does nick describe the valley of ashes as fantastic and grotesque in the great gatsby?

Nick thinks as the valley as fantastic because it is so different from what he has  seen of the upper class and  think of the valley as being better than their hollow lives. He also describes it as grotesque because it shows how "the other side" lives (Valley of Ashes shows the cons of industrial society and represents the suffering of the lower class)

"Conventions" is the the letter of a category on which you should focus when proofreading. The correct option among all the options that are given in the question is the third option or option "c". the other choices can be neglected. I hope that the answer has actually come to your great help.