The passage presents specific details, and comparing them with the choices confirms that "隣の人とトラブルになることがある。" is the only accurate representation of the text. This is directly supported by the sentence "しかし、鳴き声やにおいの問題で隣の人とトラブルになるケースも少なくない". To solve info-retrieval or detail-oriented questions, scanning for keywords from the question and mapping them to the options is key. The other choices, such as "一人暮らしの人が寂しくなる。" and "犬や猫が病気になりやすい。", introduce incorrect facts or make assumptions unsupported by the passage.