The option that makes sense of all the options provided is:
C. Monotonous
<h3>What is Monotony?</h3>
Monotony refers to the sameness of something. When the sentence refers to the unvarying scenery of the prairie land he was trying to say that the land had not many features that will make it enticing.
In due time, this piece of land would become monotonous. So, option C is right.
