Which of these efforts could earn a country a carbon credit?
O
A. It engages in a reforestation project.
O
B. It refuses to agree to a greenhouse gas target.
O
C. It engages in additional projects that burn fossil fuels.
O
D. It produces more than its greenhouse gas target.

It engages in a reforestation project.

Explanation:

The Kyoto Protocol allowed for countries to reduce their greenhouse gas emission by offsetting the emission by using the carbon sink. Carbon sinks aim in reduction of carbon dioxide from the atmosphere and storing it for a very long period of time.

Reforestation and afforestation and other forestry programs hugely contribute for increasing carbon sinks in a country and to generate carbon credits.  

Forests acts as natural carbon sink because the trees in the forests absorb carbon dioxide from the atmosphere and will store it in various parts. As the number of trees increases, the absorption of carbon dioxide from the atmosphere increases.

Reforestation will help to add to Earth’s net reserve of carbon storage to reduce global warming. A forest carbon credit is equal to one metric tonne of carbon dioxide equivalent of the newly stored or reserved carbon emission reductions.  

what subject is this

b. to discover aspects of the natural world.

hopefully i .