No is selected by default. Clicking inside the image to set a bounding box will automatically choose Yes.
1 or Numpad1 or Alt+Numpad1 for Only one
2 or Numpad2 or Alt+Numpad2 for Only one, blocked or out.
3 or Numpad3 or Alt+Numpad3 for More than one.
4 or Numpad4 or Alt+Numpad4 for The image contains adult content and/or obscenity and/or financial and/or residential addresses.
5 or Numpad5 or Alt+Numpad5 for No.