<prompt> Sex can be determined by all except ?Preauricular sulcusInnominate bonePelvic brimCoccyx  <response>: Ans. is b i.e., Innominate bone Male Female Preauricular sulcus Not Not frequent, narrow, shallow More frequent, broad deep Pelvic brim Hea shaped Circular or elliptical; more spacious; longer diameters Coccyx Less movable More movable 