Final answer:
Gordon Allport proposed that personality is shaped by both genetic and environmental factors, a view aligned with trait theory which acknowledges the role of experiences and culture in personality development.
Step-by-step explanation:
You asked which statement accurately describes Gordon Allport's ideas about personality. The correct answer is that Allport believed personality is shaped by both genetics and environmental factors. Allport is well-known for his trait theory of personality, in which he categorized traits into three levels: cardinal traits, central traits, and secondary traits. His theory acknowledges that while certain personality traits may be innate, external factors such as culture, environment, and experiences also play a critical role in shaping an individual's personality. This perspective is reflected in trait theory's understanding that traits are consistent over time but can also be influenced by one's environment.