I believe the answer would be d.muscle cramps. Breathing in toxins seems like it could relate to the other three answers.
Answer:
Provision of international law does not apply in the United States unless United States law incorporates the provision, such as ratification of a treaty by the United States Congress.
Explanation:
c) "I bet you have some kind of genetic problem that's messing up your bowels and your blood at the same time. You should have genetic testing."