Demographic segmentation involves dividing the market into groups based on quantifiable population characteristics. Education level is a core demographic variable, alongside others like age, gender, income, occupation, and family size. This type of segmentation is popular because these variables are often directly correlated with customer needs and purchasing behavior, and the data is typically accessible and relatively easy to measure through surveys and public records like census data.

A. geographic group.

This segmentation is based on physical location (e.g., country, city, climate), not personal statistical attributes like education.

C. behavioural group.

This segmentation is based on customer actions, such as purchase history, product usage rate, or brand loyalty, not static personal data.

D. psychographic group.

This segmentation relates to a customer's lifestyle, values, personality, and interests, which are qualitative psychological traits, not a factual measure like education.

1. Kotler, P., & Armstrong, G. (2021). Principles of Marketing (18th ed.). Pearson. In Chapter 7, "Customer Value-Driven Marketing Strategy," the section on "Demographic Segmentation" explicitly lists education as a key variable used to segment consumer markets (p. 216).

2. University of Minnesota Libraries Publishing. (2015). Principles of Marketing. In Chapter 5, "Market Segmenting, Targeting, and Positioning," Section 5.2, "How Markets Are Segmented," states: "Marketers have found that the demographic variables of age, gender, income, and education are especially useful when it comes to segmenting markets."

3. Weinstein, A. (2013). Handbook of Market Segmentation: Strategic Targeting for Business and Technology Firms (3rd ed.). Routledge. Chapter 4, "Segmenting Consumer Markets," identifies education as a fundamental variable within the "Demographic Descriptors" category. (DOI: https://doi.org/10.4324/9781315802496)