Which of these problems was not one that affected robert louis stevenson? a) inability to obtain the chemicals he needed for his experiments. b) a strained relationship with his strict parents. c) political controversy over his respect for natives and riffraff. d) poor health of his lungs.

A is not true.

B is true: His parents were very religious and strict, and his relationship with them was strained, especially since they disapproved of Stevenson's marriage.

C is true: Stevenson had great interest in and respect for the natives of Polynesia, where he settled with his wife and later died.

D is true: Stevenson did have poor lung function starting when he was a child, including at one point contracting tuberculosis.