Answer:
D. gradient
Explanation:
In the map with wavy wind pattern over the United States , where the direction of the wind is parallel to the curved height contours .
This is best described as Gradient wind . As , when the wind blows parallel to the curved contour lines , then that wind is called gradient wind .
In geostropic as it is not blowing in a straight path parallel to evenly spaced lines .
Hence , the answer is D. gradient .
