Take another look at the infographic explaining the science behind the polar vortex.
What does the creator of this text assume that readers will need or want to know?

A.what kinds of experiments have been done related to the polar vortex
B.ways in which scientists track and measure the effects of the polar vortex
C.how the polar vortex affects weather in the United States
D.all the other weather events that are caused or affected by polar vortexes