You are presented with the quiz "What can negatively impact animal survival?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "animals require water for survival" and "where there is no water there is drought". So, what's the best answer to the question?

Options: 1. Smoking; 2. Pesticides; 3. Abundance of food; 4. Hibernation; 5. Lack of predators; 6. disease; 7. Drought; 8. steroids;
The answer is:
7.