Four characteristics that identify something as living

If you want all 8:

Cells - it has cells, which are the basic unit of structure and function in living things

Homeostasis - it is able to keep internal conditions stable while external conditions change

Adapt/evolve- over time the organism must be able to adapt to its environment, and/or the species must be able to evolve over many generations

Reproduction- it is able to reproduce either sexually or asexually

Response- must be able to detect and respond to stimuli

Growth and development- the multiplication and differentiation of cells

Energy- it is able to obtain and use energy

DNA- all living things must have genetic material

The answer is c the potato slice shriveled because water moved out of the slice into the salt solution

Gay-lussac's law i think.