Perspex is a form of transparent plastic. It has a refractive index n = 1.50. A ray of light
strikes the flat surface of a Perspex block with
an angle of incidence of 40°. What will be the
angle of refraction?

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.

it is either c or d and i know for sure it is not a or b