“Where” vs. “in which” (Part II) - WhatIs.com
www.techtarget.com › whatis › featureFeb 10, 2020 · Answer: b. Explanation: I’m a reasonable human being — I don’t expect anyone to use “in which” this way much, if at all, in speech or casual writing. In formal writing, though, “where” refers to place — it’s what is called a locative. At a stretch, the place in question could be a specific point in a video or a document.