<span>Control of physiological activities. Homeostasis involves the steady state and regulation of the body's internal environment. Irritability is the ability to respond to a stimulus.</span>

Last option: Preserve an ecosystem

• The establishment of a bird reservation is a way to preserve an ecosystem because reservation provides suitable environment to organism. A healthy ecosystem means large number of biodiversity.
I believe your answer is E
Umm well from my studies shown that its extintion