Dora Has Spent the Majority of Her Career Learning How

Dora has spent the majority of her career learning how major life changes affect the well-being of people. She has been successful in her career and has published volumes of research over the last 10 years. Which of the following views best describes Dora's research?

A) the approach-avoidance conflict
B) the theory of perceived control
C) the biopsychosocial model
D) life events approach