Well...it might be that old "supply and demand" factor. As one example: a corporation/rancher/farmer might have the "demand" and the immigrant might have the "supply."
I personally think that the answer is C
The object if the Preposition is world. because Inventions is the subject and are made is the predicate
Answer: D
Explanation: thump thump thump, because its repetition and like a sound effect but in words :)
