Final answer:
Option A) "Happiness is defined as the feeling of contentment and well-being that a person experiences in response to positive life events" is an example of a good operational definition for the psychological concept of happiness.
Step-by-step explanation:
A good operational definition for a psychological concept is one that is valid, reliable, and meaningful. It should provide a clear and specific description of the concept being measured. Based on the options provided, option A) "Happiness is defined as the feeling of contentment and well-being that a person experiences in response to positive life events" is an example of a good operational definition for the psychological concept of happiness. It provides a clear and specific description of what happiness is.