The 'Paris Agreement' adopted in Conference of the Parties (COP 21) in December 2015 will be effective provided the document is signed by:

75 UNFCCC parties accounting for at least 51% of global greeenhouse gas emission

51 UNFCCC parties accounting for at least 51% of global greenhouse gas emission

51 UNFCCC parties accounting for at least 55% of global greenhouse gas emission

55 UNFCCC parties accounting for at least 55% of global greenhouse gas emission

The 'Paris Agreement' adopted in Conference of the Parties (COP 21) in

1.	The 'Paris Agreement' adopted in Conference of the Parties (COP 21) in December 2015 will be effective provided the document is signed by:
A.	51 UNFCCC parties accounting for at least 51% of global greenhouse gas emission
B.	51 UNFCCC parties accounting for at least 55% of global greenhouse gas emission
C.	55 UNFCCC parties accounting for at least 55% of global greenhouse gas emission
D.	75 UNFCCC parties accounting for at least 51% of global greeenhouse gas emission
Answer» D. 75 UNFCCC parties accounting for at least 51% of global greeenhouse gas emission