NO.PZ2022120703000021
问题如下：
Which of the following statements is most accurate? The Paris Agreement:
选项：
A.is legally binding under international law.
B.requires signatories to update their commitments to reduce emissions every five years.
C.defines nationally determined contributions capturing mandatory efforts to reduce emissions.
解释：
B is correct?because "Nationally determined contributions (NDCs) are at the heart of the agreement. … require every signatory (both developed and developing nations) to determine, plan and report on its NDCs, with updates to commitments every five years."
A is incorrect because "the Paris Agreement is not legally binding under international law."
C is incorrect because "Nationally determined contributions (NDCs) are at the heart of the agreement. Instead of top-down imposed contributions, they capture voluntary efforts by each country to reduce national emissions and adapt to the impacts of climate change, and require every signatory (both developed and developing nations) to determine, plan and report on its NDCs, with updates to commitments every five years."
请用中文解释一下为什么不能选C
