Hi David,
As Scarlet suggests, youe goal or expected outcome from a student's action on a question page in a lesson would help.
Next page and this page are generic jumps (same as a hml link without any html knowledge) to a relative page in a series of pages. The students do not see these but the teacher in edit mode does.
Thus if you want your student to go to the next page after selecting that specific answer, use next page. If you want the student to make a choice on another answer and try again, then this page is correct. If you put some feed back in the wrong answer, then your student will see that before they return to the same question.
You could set every answer to go to the next page, reguardless if it were "right" or "wrong". If scoreing were important to you, then in in the case where every answer goes to the next page be sure to turn custom scoring on in lesson settings.
Typically in a simple setup, wrong answers stay on this page to give the student another chance or two (see lesson settings to limit the number of changes so they do not get stuck in an endless loop of wrong answers). Right answers go on to the next page.
That is the short version. Some teachers can be very creative in their uses of these two generic jumps. Plus these jumps can act differently than expected in some more complex lesson configurations. Thus Scarlet and myself want to make sure you are not using things like clusters or unusual combination of lesson settings
Chris