I just experienced my first earthquake . I ' m at work and it scared the crap out of me . The whole building shook and then we started to sway . Then we all stood in doorways until it was over .
According to the above context, choose the best option to answer the following question.
Question: Why may the narrator be so shaken and concerned ?
Options:
- The narrator just went through a robbery .
 - None of the above choices .
 - The narrator just went through a national disaster .
 - The narrator just went through an attack .


The narrator just went through a national disaster .