Final answer:
The best way to address the change in personalities over time is to look for consistent patterns of responses that reveal stable aspects of personality, such as the Big Five traits.
Step-by-step explanation:
Addressing the problem that personalities change over time can be approached by C) To look for consistent patterns of response which indicate underlying personality stability. It's understood within the field of personality psychology that while specific traits can vary, there are core patterns of thought and behavior that remain relatively stable throughout an individual’s life. The Big Five personality traits—conscientiousness, agreeableness, neuroticism, openness, and extraversion—are examples of such patterns that have been shown to persist. Despite changes that may occur due to circumstances or over the lifespan, the consistent patterns in how these traits are expressed can suggest an underlying stability in personality.