Which statement best conveys how the author's viewpoint changes in the passage ? 1. His fear of nature intensifies as he comes to accept that a river is more dangerous than it is beautiful . 2. ability to describe the river with precise language improves as he gains more skills in steamboating . 3. His way of seeing the river shifts from mysterious wonder to objective analysis as he becomes a steamboating expert . 4. His enjoyment of the river comes at first as the result of acute observations and later as the result of proven instincts .