Which autonomic system is most likely to be dominant while someone is in a stressful situation? a- peripheral. nervous system b - sympathetic nervous system c- somatic nervous system d- 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.

thymine. in rna, thymine is replace by uracil