In general,the one most productive source of internal secondary data for marketing research problems is
A)the firm's Annual Report.
B)warranty registration cards.
C)the sales invoice.
D)salesperson's call reports.
E)individual customer records.

Question

Quizplus · Accepted Answer

The sales invoice provides detailed information on sales transactions, which can be analyzed to understand customer behavior, sales trends, and product performance, making it a highly productive source of internal secondary data.

In General,the One Most Productive Source of Internal Secondary Data