Refer to figure. 
The storm is in front of us, so we need to avoid it, but must select the best heading to do so. We need to turn away from the path of the storm by a sufficient amount to avoid it but not by too much, so we can regain our track easily.

The navigation display shown indicates we are on a current heading of 136° and the wind is coming from 156° at 30 knots - the wind is coming from ahead and to the right of our aircraft. This means the storm will be blown by the wind to our left.

110° --> INCORRECT. This would turn the aircraft left, into the path of the storm, which is what we don't want!

130° --> INCORRECT. This small change in the heading won't prevent the flight path from continuing into the storm.

140° --> INCORRECT. This small change in the heading won't prevent the flight path from continuing into the storm.

160° --> CORRECT. As indicated by the red arrow in the figure, this takes us away from the storm and its path, but we can easily regain our track.