Select the correct answer.
which of the following is not an effect of the fight-or-flight response?
o a.
sleepiness
ob. increased heart rate
oc. increased breathing
od. release of adrenalin into the bloodstream

The answer is letter A, sleepiness.

Explanation:

The "Fight-or-Flight Response" is a response of an organism to stress. When this happens, the body shows several signs and symptoms which involve cool and pale skin, sweating, dry mouth, dilated pupils, etc.

Under stress, the body releases a hormone called "adrenaline." This hormone is responsible for a temporary heart rate increase.

The breathing or respiratory rate also increases. This is the body's coping mechanism in order to increase "oxygen" intake. The oxygen is used by the muscles as a preparation to fight or flee from the situation.

Thus, letter A is the only incorrect effect of the fight-or-flight response.