Q. The Common Carbon Metric’, supported by UNEP, has been developed for

[A] Assessing the carbon footprint of building operations around the world

[B] Enabling commercial farming entities around the world to enter carbon emission trading

[C] Enabling governments to assess the overall carbon footprint caused by their countries

[D] Assessing the overall carbon foot print caused by the use of fossil fuels by the world in a unit time

Answer: A
Notes:

Why this question: Asked in the context of a new initiatives in building energy efficiency launched by the Bureau of Energy Efficiency (BEE). 

Ans) a 

Exp) Option a is correct. 

Carbon footprint of an entity is the total amount of greenhouse gases that are generated by that entity. 

Option a is correct. The Common Carbon Metric is a protocol developed by United Nations Environment Program’s Sustainable Buildings & Climate Initiative (UNEP-SBCI) for measuring energy use & reporting GHG emissions from Building Operations.  

Its purpose is to support greenhouse gas (GHG) emissions reductions through accurate measurement of energy efficiency improvements in building operations. 

Source- https://unfccc.int/sites/default/files/06_unfccc_unep_ws_oxford_rajat_gupta.pdf  

https://c2e2.unepdtu.org/wp-content/uploads/sites/3/2016/09/unep-sbci-common-carbon-metric.pdf  

Subject) Environment