Why should I value things I can't touch?

You should value things you cannot touch - like thoughts and feelings - because they help you experience emotions and bonds between people that you otherwise could not feel. Even thinking is something you cannot touch; heck, if I wasn't able to think, I wouldn't be able to write this response. The things we cannot touch are closely linked to how we react to things we can indeed touch. If a friend was upset and you weren't able to feel emotions, you wouldn't be there for them and you most likely wouldn't understand what they are going through.

the answer is b. the tomb is underground and dark, and its opening is covered by a heavy grate.