d

A. The sentence is mixed, and the sentences "this is decided by ……" and "due to ……" are mixed.

B. Miscellaneous, you can delete ",you can't live without it".

C. There are two ways to change the sentence pattern: "It depends on which part of the cold air in the Arctic and Siberia has the highest air pressure and which part in China has the lowest air pressure" or "It depends on which part of the cold air in the Arctic and Siberia has the highest air pressure and which part in China has the lowest air pressure".