Rudy Is a Product Category Manager for a Major Consumer

Rudy is a product category manager for a major consumer packaged goods manufacturer. Part of his job requires that he analyze a given product category and logically determine where improvements could be made. Rudy has determined several consumer problems this way. Which of the following best describes how Rudy uncovers consumer problems?

A) activity analysis
B) intuition
C) product analysis
D) problem analysis
E) qualitative research