Should SM not ask Development Team to help PO to understand the dependencies among items to be used in ordering them

Where did this question come from?   You need to be wary of other sites that claim to have sample Scrum exams, but contains questions that are poorly-worded or actually have a poor understanding of Scrum.

What does the Scrum Guide say about helping the Product Owner with Product Backlog maintenance?

What were the other three possible answers?  Perhaps this was a technically correct answer, but not the best answer available of the choices given?

In this case, It isn't clear what the root cause of the PO's problem is.  If the PO's problem stems from a misunderstanding of dependencies, then this might be a very good answer.  However if the problem is that they don't understand the product and stakeholder needs, would discussion with the developers help?

After reading the Scrum Guide, can you think of any reason at all why a Development Team wouldn’t help a Product Owner to understand the dependencies among items? What might the consequences be of such a failing?

@Jason, I don't know now what were the other options. Your explanation looks valid to me. I think the PSM1 exam will not have any question with incomplete details or will not have any ambiguity.

@Ian, I understand now that Dev team can help PO in understanding the dependencies among PBIs. The question/options should have clear details of what kind of help is PO seeking.

Thanks, everyone, for your responses.

I can imagine that the scrum master should not act as a Proxy between the developement team and the product owner. Instead the scrum master should teach the product owner to take the opinion of the dev. Team into account. This is also acknowledged in the scrum guide:  The Product Owner may do the above work, or have the Development Team do it. However, the Product Owner remains accountable.

Sure, but the ScrumMaster should facilitate a discussion between the development team and the Product Owner, if necessary.