During transformation,

A. A prokaryotes is changed into a eukaryote.
B. A cell takes DNA from outside the cell.
C. Foreign DNA is inverted into a plasmid.
D. The chromosome of bacterium in mutated.

B) a cell takes in DNA from outside the cell

Explanation:

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.