RPD Review Questions
Incorrect. It is used with a MESIAL rest.
Correct. The tip of the arm is placed in a distobuccal undercut.
Incorrect. The vertical approach arm must be placed just to the MESIAL of the greatest mesiodistal curvature of the facial surface. This prevents the arm from releasing upward and backward without providing retention.
Incorrect. Since #3 is incorrect, so is #4.