Final answer:
The social-cognitive perspective is the approach that emphasizes learning experiences and situational influences on personality development.
Step-by-step explanation:
The modern theoretical approach to personality that emphasizes the effects of learning experiences and situational factors on our personalities is the d) Social-cognitive perspective.
This perspective underscores the importance of observational learning, cognitive processes, and reciprocal determinism in the development of personality. The social-cognitive perspective is distinct from the psychodynamic, humanistic, and trait perspectives because it integrates the roles of learning, cognition, and social influence into understanding personality development and function.