The correct option is
C Elongated
A) Birds have narrow and elongated pelvises.
B) Birds have an elongated pelvis to aid in egg laying and flight.
C) The hips consist of the pelvis, which includes three major bones: the ilium, ischium, and pubis. These are fused into one to allow birds to lay eggs.
Birds have a greatly elongated pelvis, similar to some reptiles.D) The pelvis is almost parallel to the ground.
So the correct answer is 'Elongated'.