Addressing the dual challenge across all sectors requires progress in areas：（）.

Addressing the dual challenge across all sectors requires progress in areas：（）.
A.Boosting energy efficiency
B.shifting the energy mix to lower（）carbon sources
C.Adopting policies to promote cost（）effective solutions
D.Investing in research and development to advance technology
正确答案：Boosting energy efficiency#shifting the energy mix to lower（）carbon sources#Adopting policies to promote cost（）effective solutions#Investing in research and development to advance technology