We stopped and reviewed the map . We were n't quite halfway , but we did seem to be on pace to make it to the shelter at a reasonable time . We decided to walk another mile or so to Marble Spring and have lunch there . It did n't take long to get to Marble Spring .
What may I be currently doing ?
Pick the best answer from the following options:
A. Biking
B. None of the above choices .
C. Hiking
D. Driving


C