Answer the following question given this paragraph: The extent of Arctic sea ice in summer has been decreasing rapidly. The ice pictured below is the sea ice minimum in 2011 ( Figure below ). The yellow line is the median minimum ice extent for 19792000. Q: What trend is occurring involving the extent of arctic sea ice in summer? A:
OPT:
[I] slow decrease.
[II] water decrease.
[III] Ice growth.
[IV] rapid decrease.
Answer:
[IV]