Which: Question Words is a very important topic. We can use which in different constructions.
Which do you prefer?
What do you prefer?
Which is the capital of Canada?
What is the capital of Canada?
Which of us / you / them
By the way this is subject question. The subject of the sentence is going to be the answer, if we use the full answer. Even in the short answer in conversational English.
Which of you has passed the test? She (has passed the test)! or Her!
Which of the +noun
Which of the following takes the longest time to break down or disintegrate? A. Disposable diaper. B. Hard plastic container. C. Aluminum can.
Which of the following women is known as the “Moses of her people”? A. Harriet Tubman. B. Mary McLeod Bethune. C. Shirley Chisholm. D.
Which of these / those (+ noun)
It can be subject or object questions.
Which of these is NOT a name of one of the wildfires that raged across California this week?
This is subject question.
Which of these statements is true, if any?
This is also subject question.
Which of these statements do you know?
This is object question.
Which of my / his / her / its / our / your / their …
After the possessive pronoun we place a noun.
Which of your food habits is most dangerous?
Which of vs Who of vs Who among us / you / them / the +plural noun vs Who
Who of us has not had that situation, where you’ve got to wait for approval, and the doctor says, well, I don’t know if your insurance company is going to cover this?
Which of us has not put walls and razor wire around our concealed sadnesses and past regrets? Who among us was raised by a perfect family? Who does not have hilarious, life-affirming stories to share and debilitating secrets to dispel?
Here is another example.
Who of you here can understand the thought process of the necessity of simultaneous evolution in most if not all living beings?
Also on question words: