Which of the following statements about stress is true?
a: stress is a normal part of life.
b: there are different kinds of stress
c: stress can lead to health problems
d: all of the above

The answer is D. Stress can be defined as the brain's response to any demand. Many things can trigger this response. Stress will at some point affect us all but it is how our mind and body processes stress. Therefore, stress is a normal part of life. There are many different kinds of stress which can cause different health problems. For example, heart attack, stroke, depression etc...