参考答案

正确答案：C
解析：理解题。第二段第七句指出：All his children had died because of being cooped up in one room.第五句提到“拥挤的生活条件”。此外，首段末句中的We need to save and move to a bigger place和本段第六句的“也许Julie有些道理”也表明cooped up意思是“被禁锢”，故[C]为答案。