This question invites someone to make a self-assessment. When they suggest where they best fit in the diagram they open an important window for discussion.
If someone identifies with the lower line in the diagram they are expressing an important perspective. Currently they do not believe they are trusting Christ to connect them to God. You can probably move on to the next question that explores what they would like to be true of their lives.
If someone identifies with the top line of the diagram they are making some sort of positive statement about the importance of Christ in their lives. It would be appropriate to ask, "Can you tell me about the time in your life when you trusted Christ to restore your relationship with God?" This question will invite them to share their story with you.
Some people don't prefer "either/or" questions. Some people see themselves as not fitting in the diagram you have drawn. In that they didn't identify with the top line you learned something about their view of Jesus. For the moment they don't appear to be trusting him to restore their relationship with God. Knowing this, you can move on to the next question