“Which” questions are a type of grammatical construction in the English language that are used to ask for specific information or clarification when there are a limited number of options available. They are formed by using the pronoun “which” and adding the subject of the sentence and the main verb. For example: “Which book do you want?”, “Which of these shirts do you like?”, “Which way should I go?”. These questions are asking for specific information or clarification when there are a limited number of options available. “Which” is used to ask someone to choose one item from a group of items or a set of options, it could be used to ask about a preference, a quality, or to narrow down a search.