Answer: (D) Idiographic perspective
Step-by-step explanation:
The Idiographic is one of the term that is used to refers to the leadership behavior of the person that basically focuses on the individual requirement.
It basically emphasizing the various types of personal experiences based on the nature of the human and it basically helps in understanding the various types of phenomena and the culture.
According to the given question, Stan is one of the marketing intern that basically conduct the various types of behavior research on the fashion concept and based on the given instances, Stan is embracing the Idiographic perspective of the consumers.
Therefore, Option (D) is correct answer.