1.  Cortisone
  2. Serotonine
  3.  Adrenaline
  4. Estrogen
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Option 3 :  Adrenaline

Adrenaline is a hormone secreted by adrenal glands. When we are frightened or excited our brain sends impulses along a nerve to our adrenal glands. This makes them secrete adrenaline into the blood.
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