What is “hard” about the “hard problem”? a. To solve it, we would need to conduct extremely expensive research. b. The research to solve this problem would raise difficult ethical issues. c. The...

What is “hard” about the “hard problem”? a. To solve it, we would need to conduct extremely expensive research. b. The research to solve this problem would raise difficult ethical issues. c. The question is philosophically challenging, and we don’t know where to begin. d. We already know the answer, but it is hard to get most people to accept it