Final answer:
The character of Randolph in the provided passage is best described as 'indifferent', due to his lack of concern or interest in the opinions and reactions of others, as seen in his interactions.
Step-by-step explanation:
In the passage provided, the word that best describes Randall is indifferent. We see a character named Randolph (presumably a child given the context) who seems largely uninterested in the reactions of those around him, especially in the opinion of Winterbourne. Randolph's statements show a disconnectedness, as he talks about his own interests and information about his family without engaging with the people around him or the situation at hand.
For example, when Winterbourne tells him about the Alps, Randolph ignores him and continues talking about his own experiences. This indifference is again seen when he talks about his father being in a 'better place than Europe' without any apparent emotion. The word 'indifferent' summarizes his lack of concern or interest in the opinions and reactions of those around him, which is a recurring theme in the passage.