Need more info can’t really get an answer out of this sorry :/
Answer:
A The book on the table
Explanation: It is at rest which mean its in equilibrium
What I can't see it what is it
Deep inside the medial temporal lobe is the region of the brain known as the limbic system, which includes the hippocampus, the amygdala, the cingulate gyrus, the thalamus, the hypothalamus, the epithalamus, the mammillary body and other organs, many of which are of particular relevance to the processing of memory. :)