Here's why:

* Binary fission is a form of asexual reproduction where a single-celled organism (like a protozoan) divides into two identical daughter cells.

* This process is common in bacteria and some protists, including protozoa.

Other forms of reproduction are:

* Budding: A new organism develops from an outgrowth or bud on the parent.

* Multiple fission: The parent cell divides into multiple daughter cells at once.

* Sexual reproduction: Involves the fusion of gametes (sex cells) to produce offspring.

Since the description focuses on a single cell dividing into two identical copies, binary fission is the most accurate term.