Answer:
B. a substance that sends the immune system into action
Explanation:
One possibility is that they broke a bone in their ankle, but there are probably others.
Answer:
D, acting based on instinct
Explanation:
By acting based on instinct you are not giving enough time or thought towards your decision. You're acting too quickly to fully understand your decision making process or the decision itself.
Answer: A. Removing all stressors from your environment
Explanation: