as we all know tht lord rama was borb to kill ravan and yes the entire plan i mean the way of slaining ravan was decided by the all the gods and devas and rishis ad it was known tht sita ji was going to be abducted by ravan and so before the abduction sitaji was handed over to agni and it was only her chayya or parchaiy or shadow which ravan abducted and yes after the war is over when agnipariksha was done the real sitajii was handed over to lord rama
ratna since ur a new member so u r not knowing this tht sooooooooo much of discussion had already being done on this topic !!!
the conclusion was tht ravan abducted the real sitaji as per the valmiki RAMAYAN !!!! there is no mention of chaaya sita in valmiki ramayan ,after all the endless discussion the conclusion was tht ravan abducted the real sita not chaaya sita (shadow of sitaji) !!!