Select the best definition for: Demographics
a. Where your customers live, including city versus urban communities, international or domestic based.
b. Why your customers buy, including attitudes and beliefs, lifestyle, interests, hobbies, social status or identify
c. How your customers buy and how they intend to use your product, including understanding of their needs versus wants, spending patterns, brand preferences, and how they are influenced by advertising
d. Who your customer is, including age, gender, ethnic background, income level, marital status.