Constriction occurs when the muscular walls of blood vessels contract, and constriction raises blood pressure. Given these facts, what happens when muscular walls of blood vessels contract among the following options:
- matter vibrating
 - Dehydration
 - Leptospirosis
 - rapid expansion
 - at or near the margins
 - recovery time from fatigue
 - blood pressure rises
 - major threat to health


 

       blood pressure rises  