Given a statement, generate a question such that the answer is contained in that statement.

acetate changes the color of litmus paper from blue to red
What color does acetate change the color of litmus paper from?

Color and going underground helps conceal from scavengers.
What does going underground help conceal from scavengers?

The spinal cord links the brain to the rest of the body.

What connects the brain to the rest of the body?