The answer is d. Chile
if you look at any map you will see that Chile is not near the Colombia border.
There are two forms for the Imperfect Subjunctive in Spanish. The -se form is considered the traditional form of the imperfect subjunctive, while the -ra is derived from an old Latin indicative form. Both are almost interchangeable in modern Spanish... So yes.
Me llamo. como esta usted. estoy muy bien. como estas. mucho gusto. hasta mañana. el gusto es mio. nos vemos.
