From Stata's user interface, select File Open, locate NES.dta on your computer, select it$,$ and click Open. Run the describe command. According to the resul the NES Dataset has $($fill in the blanks$).$ observations and variables.

The NES Dataset contains a variable named terrorism$\_$worry. The variable records NES respondents' answers when researchers asked how worried they are abc a terrorist attack in the near future. With the NES Dataset open, run codebook terrorism$\_$worry.

A$.$ Respondents who are extremely worried about a terrorist attack in the near future have what numeric code on terrorism$\_$worry? $($select one$)$