Which sentence uses cause and effect to strengthen the argument that melting Arctic ice will have a significant outcome?
A.
The reduced ice mass in the Arctic is allowing countries to explore the region more.
B.
Regardless of the cause, the increase in temperature is causing ice in the Arctic to melt.
C.
In recent decades, the average temperature rates in the world have risen.
D.
Other people argue that this increase in temperature is a phenomenon that happens naturally.