Question

which of the following is a large sink (deposit) for carbon? water vapor groundwater fossil fuels icy glaciers

Explanation:

Carbon sinks store carbon. Fossil fuels (like coal, oil) are formed from ancient organic matter (rich in carbon), acting as large long - term carbon deposits. Water vapor is mainly H₂O, groundwater has limited carbon storage compared to fossil fuels, and icy glaciers store water (H₂O) not significant carbon.

Answer:

C. fossil fuels