Can you please help me elaborate an answer that further explains this problem with relevant references?

Officer Morrison is driving around a high-crime area on routine patrol when she sees two young female teens that appear to be prostituting themselves. They don't look familiar and don't look like they are from this areabased on how they are dressed and other factors of appearance. Officer Morrison doesn't know for sure if they are committing a crime but feels that something isn't right. Are you legally justified in stopping and questioning them? Further, if you do stop to question them about their ages, can you give chase if they turn and run from you? How do you react in this situation and why? Include in your response:

A. The Constitutional rights and legal issues that may be involved? B. What other factors or information might emerge that could alter the course of your action in this scenario?