D. It causes the narrator to rethink his perception of john
Explanation:
In the passage, John and the narrator do not enjoy each other's company. At first, the narrator thinks that John is arrogant to take the lead on the mountain climb. However, the narrator soon learns that John is a very skilled climber.
ecological and social sciences, with a more complex nonequilibrium systems ... As discussed above, environmental economics aimed to create policies that ... local communities, activist groups, and municipal authorities now exist
