这个题目是问9大边界中，最重要的是哪两个不？

问题如下：

The “core planetary boundaries” identified by the Stockholm Resilience Centre are:

选项：

A.biosphere integrity and climate change. B.climate change and land-system change. C.biosphere integrity and land-system change.

解释：

The Stockholm Resilience Centre has identified nine “planetary boundaries” within which humanity can continue to develop and thrive for generations to come Two of these—climate change and biosphere integrity—are deemed “core boundaries,” for which significant alteration would “drive the Earth system into a new state”