This question has options. Answer the question about text:

For most of the way after Parkdale , CO we followed the Arkansas River . We stopped a couple of times to take pictures . About an hour before we reached Gunnison it started raining . And continued to rain for hours .

What may be the reason for being on the road so much ?
Possible answers:
[A]. They are out to explore for the day ..
[B]. None of the above choices ..
[C]. They 're on a road trip ..
[D]. They 're on a scavenger hunt ..
[C].