I learned a lot from reading the article "The Weather in China."
D. Weather, because it is part of the title.
Hope this helps.
Through his skill or the way of writing
Mount Everest is not a person, so whom and who cannot be used.
The phrase that the blank spot is in needs a transition word to flow correctly. 'that' does not flow, as it would make this phrase grammatically incorrect.
The answer is B. which.
