ANSWER is OPTION 4 i.e Lysosome.Lysosome is known as the 'Suicide Bag' of a cell.It was discovered by Christian Rene de Duve.There is a sac-like structure bounded by a single membrane and CONTAINS a hydrolytic enzyme.The enzyme FOUND in lysosome bursts and digests the DEAD cells. So it is called the "suicide bag" of the cell.These are not found in Red Blood Corpuscles of mammals.