Which property of living things refers to an organism's ability to adjust its internal environment?

The property that refers to an organism's ability to adjust its internal environment is known as the regulation of internal environment. This concept, also called homeostasis, is crucial for maintaining the conditions necessary for life, such as temperature, pH, and the concentration of various ions and nutrients. Organisms must be able to detect changes in their external environment and make adjustments within their body to ensure that their internal conditions remain stable and conducive to cellular function. This ability to regulate internal conditions is fundamental to an organism's survival, enabling it to thrive in various environments.

In contrast, growth and development focuses on the changes an organism undergoes throughout its life cycle, while response to the environment describes how organisms react to external stimuli. Energy processing pertains to how living things obtain and utilize energy from their surroundings. Each of these properties plays a vital role in the life of an organism, but the specific ability to adjust internal conditions directly ties to the concept of homeostasis.