We did n't do much today , other than travel on a bus for 9 hours going south . We paused in Chillen ( birth place of Chilean revolutionary hero Bernardo O'Higgins ) and did some flea market shopping . i ca n't understand a word people say to me here .

Question: What 's a possible reason they traveled on a bus ?
Answer: None of the above choices .Because they did some flea market shopping .Because they did n't want to do much today .Because the bus ride was cheap .