The current spell of cold wave in the US has been a fall out of the :

Options

A. polar vortex
B. biodiversity and habitats
C. climate and energy
D. political administration

Answer

A

Explanation

The 2013-14 North America can cold wave was caused by southward shifts of the North Polar Vortex. On December 1, 2013, the weakening of the polar vortex led to the begin- ning of an abnormally cold trend in the Eastern and Central United States. The continued deterioration of the polar vortex led to the jet stream pushing southward, bringing record cold temperatures across the Eastern U.S.