Which autonomic system is most likely to be dominant while someone is in a stressful situation?
peripheral nervous system
sympathetic nervous system
somatic nervous system
parasympathetic nervous system

The correct option is:

sympathetic nervous system

Stress is actually nothing but the bodies reacting to a challenge that it is faced with.

Explanation:

In response to a stressor, the sympathetic nervous system choreographs what you familiarly call the fight-or-flight answer. It improves muscle blood flow and tension, stretches pupils, stimulates heart rate and respiration, and prolongs perspiration and arterial blood pressure.

your answer should be c) enjoy!

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."