Stress impacts us at multiple levels and across multiple systems. Which of the following demonstrates how connected our systems are in responding to stress? A Higher endocrine system activity reduces the activity of our autonomic nervous system. B Epigenetic changes due to stress lead to an increase in the size of our amygdala. C Stress increases activity in our central nervous system, which causes genetic changes for our offspring. D Higher levels of cortisol are produced by the higher activation of our sympathetic nervous system.