Neither of those were developed to prevent global warming,in both cases that turned out to be one of the many potential positive results if the technology were widely accepted and implemented
I believe the correct answer is C. The other answers give outside information that doesn’t correlate with the promoted question.
Yes.
Language affects the way we think about things. Different languages embed diferent values and perspectives, so knowing more than one langage tends to help a person think about things in more than one way.