Increased activity in the sympathetic nervous system leads to

D) relaxation of the airways in the lungs

Explanation:

Sympathetic nervous system is a part of the autonomic nervous system together with the parasympathetic nervous system.Sympathetic nervous system functions to stimulate the fight or flight response. In other words it prepares the body for intense physical activity. The parasympathetic nervous system on the other hand has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions

The answer is magnitude measures the effects of an earthquake on the area , while the intensity measures the strength of an earthquake.