Answer:a is the answer:) sorry if it’s wrong I’m pretty sure it’s right
He meant that if they failed then everything that the world has worked so hard for, to advance and become "smarter" than we once were would all be for nothing. We would enter a new Dark Age. The Dark Ages were an extraordinarily difficult period in the story of humanity. It is estimated that 100 million people died at the hands of war, poverty, and plague. But during this time new ideas and ideals were born and much of the groundwork was laid for the world we know today.
An argumentative speech is a persuasive speech in which the speaker attempts to persuade his audience to alter their viewpoints on a controversial issue. ... Argumentative speeches generally concern topics which are currently being debated by society, current controversial issues.
