<prompt> The surest sign of intrauterine death includesSmall sized fetusOver riding of cranial bonesSpaldings signGas in aorta  <response>: D Gas in aorta Straight X-ray abdomen: The following features may be found in varying degree, either singly or in combination. Hyperflexion of the spine is more common. In some cases hyperextension of the neck is seen. Crowding of the ribs shadow with loss of normal parallelism. Appearance of gas shadow Roberts sign in the chambers of the heart and great vessels may appear as early as 12 hour;; but difficult to interpret. When detected, provides conclusive evidence. 