Final answer:
The correct answer is 'Cells always stay the same', as this is not an example of how organisms maintain homeostasis. Unlike the other options, cells are dynamic and must adapt to maintain internal equilibrium, not stay the same.
Step-by-step explanation:
The question asks which option is not an example of how organisms maintain homeostasis. Homeostasis is the ability of an organism to maintain internal equilibrium by adjusting its physiological processes. Given the options, 'Cells always stay the same' is not an example of maintaining homeostasis. While 'Cell division allows organisms to grow and repair damaged parts', 'Food is made during photosynthesis, and energy is produced from food during respiration', and 'Materials move into and out of cells through the cell membrane' all are essential aspects of maintaining homeostasis, cells do not always stay the same. Rather, they respond to changes, adapt, and sometimes even signal other changes in the body to maintain a stable internal environment despite external fluctuations.