Final answer:
Joshua's ideas about the aliens likely changed due to their actions and his father's responses. The exact reason for his change in perception is inferred to be the aliens' friendliness and his father's welcoming nature based on typical story development, aligning with option B.
Step-by-step explanation:
Based on the provided excerpts, we can infer that Joshua's ideas about the aliens change over the course of the story. While the specific details about the aliens and Joshua's father's actions are not provided in these excerpts, an understanding of character development and story progression allows us to draw conclusions. Joshua's perceptions likely shift as a result of interactions with the aliens and his father's responses to them. If the aliens demonstrate kindness as opposed to being unkind or unpredictable and his father welcomes them rather than protecting Joshua or being skeptical, it is logical to choose option B: Joshua's ideas change because the aliens were friendly, and his father welcomed them. However, without additional context from the specific story about Joshua's interactions with the aliens, we cannot pinpoint the exact reason for Joshua's change of heart.