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the big bang theory states that

a. the universe will explode
b. the universe began as a small, dense ball of matter
c. the universe is contracting
d. the universe cannot expand anymore

B. the universe began as a small, dense ball of matter

The Big Bang theory covers how the universe was created not how it is fluctuating in size

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.