This is a message, usually about life or society, that an author wishes to convey through a literary work. It is called the central idea, main point, or systematic argument.
Answer:When severe drought struck the Great Plains region in the 1930s, it resulted in erosion and loss of topsoil because of farming practices at the time. The drought dried the topsoil and over time it became friable, reduced to a powdery consistency in some places.
It should be 4 because dramatic irony happens when the audience knows something that the character in the play/ story doesn’t.