Scientists break down evolution into which two categories?

microevolution and macroevolution

macroevolution and genetic drift

microevolution and mass extinction

natural selection and macroevolution

natural selection and macroevolution

Option A, microevolution and macroevolution

Explanation:

Scientist have categorized evolution base on the time scale into following two categories

a) Macroevolution - These are the processes which take a long time to occur such as formation of a new species, extinction of any rare species etc, Also it affects a large mass of population or the entire population

b) Microevolution - In this, the processes of change take a short time and usually they impact only a certain set of species for a shorter time period.

Thus, option A is correct.