I don't know what the original sentences looked like, but I assume the answer is :
C) That ancient land was located in the Middle East, a hot and sunny part of the world.
The answer is B. because an adjective clause always describes the word right before it.
I Think The answer is c I hope it helps Message Me if I’m wrong and I’ll change My answer and fix it for you
The answer is c) with a nightingale in the trees of a dark, nighttime forest