5. which event would fall into the category of major life changes?
a. an argument with your best friend
b. a tornado damaging your house
c. living near an airport
d. moving to a new city

D.moving to a new city

the last statement is correct i.e.

when your heart is not pumping enough blood around your body because your heart is severely failing, you may need an artificial heart. an artificial heart is a mechanical device, about the size of an orange, that is connected to your heart or implanted in your chest to or replace a failing heart.

the psychologist would claim that the research results were significant.