Why might a speaker use a rhetorical question in a speech?

Which of these can an adverbial clause modify?

Which type of writing is best illustrated in a venn diagram? chronological order fact and opinion comparison and contrast cause and effect

Idon't know which one from these two forms is correct! "he believed that the technology of the future would allow robots to do the same tasks as a human." or "he believed that the technology of the future would have allowed robots to do the same tasks as a human. , it's ! i need your !