Which of the following supports the survival of cells inside an organism?

Homeostasis is the correct choice because it refers to the processes and mechanisms by which an organism maintains a stable internal environment despite changes in external conditions. This stability is crucial for the survival of cells, as they require specific conditions to function optimally. For instance, factors such as temperature, pH, and concentrations of ions and nutrients must be regulated within certain limits. If these parameters deviate significantly, it can impair cellular functions, leading to cell damage or death.

While metabolism, growth, and development are all important aspects of biological processes, they do not directly address the immediate needs for maintaining internal stability that is vital for cell survival. Metabolism refers to the biochemical reactions that provide energy and nutrients, growth involves the increase in size and mass, and development encompasses the progression through life stages. However, without homeostasis, none of these processes could occur effectively, as cells would not be able to maintain the necessary conditions for their survival and operation.