Answer:
D)differential susceptibility.
Explanation:
The differential susceptibility model, posited by Belsky and Pluess (2009), explains that the effects of the environment on child outcomes may be negative depending on how an individual is affected by it; that a person's development and emotional aspect is affected differently by the qualities and experiences of the environment. In other words while Travis may be sensitive to the negativity of his environment, Marcus may not be.