The point of view in the narrative primarily involves sharing Hillary’s thoughts and feelings, which has a significant impact on how the reader experiences the climb. By providing insight into Hillary's internal emotions, worries, and physical sensations during the ascent, the reader becomes more intimately connected to his experience. This connection allows the reader to understand the mental and physical challenges of mountain climbing, making the narrative more immersive. While it does also allow the reader to observe both Hillary's and Tenzing's activities, the emphasis on Hillary's perspective really draws the reader into the action and the emotional landscape of the climb. Therefore, the most fitting response about the effect of point of view would be:
It involves the reader in the action by sharing Hillary’s thoughts and feelings.