When a relatively stable anticyclone forms on the east side of Shanghai, the possible weather phenomena in Shanghai are as follows: a. Downdraft prevails, and it is cold and dry.

This topic investigates the influence of weather system on weather. The center of the anticyclone is downward flow, dry and rainy, and wind forms around the anticyclone. When a relatively stable anticyclone forms on the east side of Shanghai, Shanghai is a southeast wind blowing from the ocean. Form a precipitate. So choose option d in this question.