Final answer:
The events in paragraph 4 likely highlight a callous disregard by emphasizing the indifference of the characters, which contributes to the theme of the story by showing their apathy or moral disengagement.
Step-by-step explanation:
Events in a narrative usually contribute to the overarching theme by showcasing the actions, attitudes, and values of characters in the story. In paragraph 4 of the selection, if the events highlight a callous disregard, this could be construed as the author using these events to emphasize character indifference, thus contributing to a broader theme of apathy, detachment, or moral disengagement in the story. Choosing the correct option would depend on the specific details of the passage, but typically, callous actions would emphasize the indifference of the characters, not their sensitivity, and would serve to underscore the importance of such actions within the thematic structure of the piece, rather than downplaying them.