Among the following weather symbols, () A.B.C.D stands for west wind level 4.

Wind direction refers to the direction in which the wind comes, that is, the end of the wind pole marked with the wind tail and the wind flag. The expression of wind level is that each wind tail represents wind level 2 and a wind flag represents wind level 8. Looking at the map, we can see that A means the east wind level 4, B means the northeast wind level 4, C means the southeast wind level 4, and D means the west wind level 4.

Therefore, choose: d.