Which of the following is an example of biofeedback?
a) guy learns to stop crying after being rewarded with gold stars for bravery.
b) kecia successfully quits smoking after her psychologist has her smoke so rapidly she cannot tolerate another cigarette.
c) jane decides to work fewer hours after seeing a film linking stress with cancer.
d) chico learns to lower his blood pressure by meditating twice a day.
e) milos learns to relax by being provided with information on changes in his heart rate.

The correct answer is option D.  

Explanation:

Biofeedback appears to be one of the most useful and effective for the condition that is related that is caused by stress. These stress include muscle spasm, eating disorder, pulse rate or heart rate, bedwetting, and learning disorders.

In psychology the biofeedback is a mind and brain technique that help in gaining control over the body system to relax and lower the stress, it uses auditory and visual feedback for the control. in option D Milos use information regarding the change in heart rate to relax is an example of biofeedback.

Thus, the correct answer is option D.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?