According to Webster Dictionary, Homeostasis is a relatively stable state of equilibrium or a tendency toward such a state between the different but interdependent elements or groups of elements of an organism, population, or group.
In simpler words, homeostasis is a period in time where things are relatively balanced and able to adapt to change without causing a lot of problems. I found a few examples involving the human body including body temperature, glucose levels and fluid volume. If you need an extra explanation, I will link the site if examples down below. (:
Happy studying!
http://www.brighthub.com/science/medical/articles/112024.aspx
Personification is adding human characteristics to a non-human object. (D. "The landscape listens, shadows - hold their breath.") The landscape listening as if it has ears, and shadows holding their breath are things a living thing would do, so (D) is the best answer.
