<prompt> Which one of the following is a distinguishing feature of Edwards syndromeHypotoniaHypotelorismHoloprosencephalyRocker bottom feet  <response>: Rocker bottom foot, also known as congenital vertical talus, is an anomaly of the foot.It is characterized by a prominent calcaneus heel bone and a convex rounded bottom of the foot.It gets its name from the foots resemblance to the bottom of a rocking chair. 