Hey there!
The force of air. Let' think about this. The only way for air to flow would only be if first . . .
1.) there are high pressure for the air to have some direction do move from.
2.) and also from areas that carry high pressure BUT at the same time, they are slides back down to low pressure and from this,the pressure of air would rise.
Your correct answers from your options listed above would be the (second option).
The direction that the moving force of air flows from areas of high pressure to areas of low pressure.
I hope this helps you!
