Final answer:
A line indicating that Spanish priests demanded complete rejection of Hopi traditions and focused on converting the youth, severely upsetting the Pueblo, captures the narrator's view on Spanish religious impositions.
Step-by-step explanation:
The line that best shows the narrator's point of view that the Spaniards were trying to change the religion of the Hopi people is: "Spanish priests insisted that natives discard their old ways entirely and angered the Pueblo by focusing on the young, drawing them away from their parents." This line encapsulates both the cultural imposition and the forceful tactics used to convert the Hopi to Catholicism, indicating a neglect for the indigenous spiritual practices and social structures.