Question

what is the most primitive method of cell division?
binary fission
fragmentation
meiosis
mutation

Explanation:

Binary fission is a simple and ancient form of cell division used by prokaryotes like bacteria. Fragmentation is more about organism - level break - up for reproduction in some multicellular organisms. Meiosis is for sexual reproduction in eukaryotes to produce gametes. Mutation is a change in DNA, not a cell - division method.

Answer:

binary fission