What is 1 through 4 because i don't understand it

The first one is a: mitosis produces two genetically identical daughter cells.

The second one is b: prophase

The third one is a: interphase

The fourth one is c: metaphase.

Mitosis is the process of body (somatic) cells splitting to form new body cells.
It contains 4 phases:
interphase, when the cell is between splits and the chromatin is bundled up.
prophase, when the chromatin doubles and condenses to chromasomes.
metaphase, when the chromasomes line up along the cell equator,
anaphase, where the double chromasomes split into separate groups,
telophase, when the groups form new nuclear envelopes and the cells split.
 

Digestion because it removes waste