Society is able to grow and learn from tragedies and this is shown by the author D. giving examples of the changes that have made society safer after other tragedies have occurred.
According to the author, society is able to learn from a tragedy by implementing changes that are meant to curtail the chances of the tragedy occurring again.
For instance, when there are plane crashes, more safety measures are implemented. Terrorist attacks lead to more security.
In conclusion, option D is correct.
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