So here we have an example problem that says the hydrogen fluoride or HF molecules below are interacting with each other through which types of bonds. And we've got these 4 potential answer options down below. And so notice in this image on the left-hand side box in blue, we have one of the hydrogen fluoride molecules, and then on the right-hand side, boxed in blue, we have the other hydrogen fluoride molecule. And so notice that these 2 separate hydrogen fluoride molecules are interacting with each other through this yellow highlighted interaction or this yellow highlighted bond that we can see here. And what you'll notice is that this interaction, this bond that is highlighted in yellow, is not trapped within either of these hydrogen fluoride molecules. It exists between the 2 molecules. And so because that's the case, we know that it must be an intermolecular bond because intermolecular bonds are not trapped within a molecule. They exist between separate molecules. So option C is going to be the correct answer here.
Now option A says intramolecular bond, which we recall from our last lesson video, is trapped within a molecule. And so again, this yellow highlighted bond here is not trapped within either of these two hydrogen fluoride molecules. Instead, this bond that you can see highlighted here in red and this bond over here that you can see highlighted here in red are intramolecular bonds because they are trapped within the hydrogen fluoride molecules, if you will. So, again, we can eliminate answer option A for that reason.
Now option B says extramolecular bond, which is not a type of bond that we've talked about in our previous lesson videos, and this isn't really a thing, so we can cross off option B. And then, of course, we can cross off option D, which says none of the above. So again, C here is the correct answer, and I'll see you all in our next video.