I think it's if we become too dependant on our technology, we will lose our humanity
I would say the answer is going to be c.
The anwser is A: That like Polybus, the prophecy is dead and buried.
By saying that the prophetic oracles were worthless, the speaker demonstrates his complete dislike and disregard for them. And to emphasize his opinion, he adds that Polybus has taken them to Hades (in older Greek mhyts this the abode of the dead,where all mortals go when they die), which is a place where he already is.
Answer:
Attach the fragment to sentence 2
Explanation:
Replace the period at the end of sentence 2 with a comma and a lowercase T on "the" so you have an appositive and a relative clause phrase that provides additional information about 1959.