By the time they are 12 years of age.
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Answer: A, B, D
Explanation:
One of the main ideas is to become a hero which is considering that heroes will put the safety of others in the first place and they will rather save someone than themselves. They have faced adversity and become heroes.
Some passengers did manage to overcome their fears which is great successful but other could not do it. Heroes are maybe afraid sometimes and they have also fears like others but they will help anybody.
The answer is Positive or negative depending on the circumstances, whether between a serious illness where someone needs medical attention and has noticeable symptoms or they can be faking it which would relate to a mental disorder.
I hope this helps