Solution:Concept- Fission in biology is the division of an organism into two or more parts and replicating of those pieces into new organisms that are similar to the original. Fission is the term used to describe how cells divide into distinct pieces.
Binary fission, also known as asexual body division into two new bodies. When an organism divides into two halves (cytokinesis) through binary fission, it doubles its genetic material, or deoxyribonucleic acid (DNA), with each new creature acquiring one copy of the latter.
Hence, the correct answer is option 4.