Read the following article and answer the question by choosing from the options.

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 .

Why may the narrator be so shaken and concerned ?
Options: 1. The narrator just went through a robbery .; 2. None of the above choices .; 3. The narrator just went through a national disaster .; 4. The narrator just went through an attack .;...A:
3.