I’ll pay a visit to the Inner Mongolia , there is a large temperature difference between day and

I’ll pay a visit to the Inner Mongolia , there is a large temperature difference between day and night. A. in which B. for which C. from which D. of which

The correct answer is A. in which. This question tests relative pronoun usage to connect two clauses. The second clause describes a characteristic of Inner Mongolia ("there is a large temperature difference..."), so we need a relative pronoun that indicates "in this place."

"In which" functions as an adverbial phrase meaning "in Inner Mongolia," logically connecting the location to its climate feature.

Other options fail grammatically: "for which" (reason), "from which" (source), and "of which" (possession) do not convey the required spatial relationship.

In complex sentences like this, "in which" often replaces "where" in formal writing, maintaining clarity about the location being described. When encountering similar questions, identify the relationship between clauses—here, a place and its attribute—to select the appropriate relative pronoun.