If i read that right, then an example of an intentional injury could be how some people (people who are depressed, etc) cut themselves. and an unintentional could be something like tripping down some stairs, etc
Answer:
illness- a disease or period of sickness affecting the body or mind.
disease- A disease is a particular abnormal condition that negatively affects the structure or function of part or all of an organism, and that is not due to any external injury.
sickness- the state of being ill.
In physics a stimulus is a chemical or physical change in an organisms structure (internal or external environment)
Not completely sure, but pretty confident that the answer is C.