问题：
[单选题]The main idea of Paragraphs 3 and 4 is ______.
Aboxes help cats relieve stress
Bcats love hide-and-seek games
Cit is difficult for cats to cope with a new environment
[单选题]The main idea of Paragraphs 3 and 4 is ______.
Aboxes help cats relieve stress
Bcats love hide-and-seek games
Cit is difficult for cats to cope with a new environment
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