Write a question about the following article.

We met so many interesting people ( for all there is to do is sit in the cantina , play card games and talk to other hikers ) from all over the world . It was just so great . Later the next morning , I hiked out by myself .

Question:
What may be the reason for their hiking trip ?
OPT:
a). They wanted to explore a new place .;
b). None of the above choices .;
c). They wanted to play card games .;
d). They wanted to get some exercise .;