<prompt> Features of Laurence-Moon-Biedl syndrome include:HypogonadismObesityPolydactylyAll of the above  <response>: d. All of the aboveRef: Nelsons 20e p 2514, Ghai 8e p 532Laurence-Moon Syndrome: It is an autosomal recessive disorder of hypogonadotrophic hypogonadism, which is characterized by mental retardation, obesity, polydactyly, retinitis pigmentosa and hypogonadism. 