The fight-or-flight response. In reaction to stress, your body will either want to freeze or run away. For example, let’s say you suddenly see a bear in the park: you might experience the flight-or-fight response in reaction to seeing the bear because of the sudden stress you feel.
You didn't provide us with any real choices but one can be sure that resilience can be characterized by different traits where a person has shown that he or she would, despite very difficult and stressful circumstances, be able to withstand the requirements that the situation at hand had required of the person.
The last option would be your answer.