Final answer:
Marketing research is used by marketing managers for problem identification to discover the underlying symptoms of problems and issues that can impact a business's marketing performance, leading to better-informed strategies and solutions.
Step-by-step explanation:
A marketing manager would use marketing research for problem identification to discover the symptoms of various marketing-related issues which may not be immediately apparent. This process is critical to identify the underlying causes rather than just surface-level problems, thus allowing for more effective strategies to be developed. For example, a marketing manager might carry out a root cause analysis or gather information from stakeholders to ascertain what the real challenges are. Conducting research also enables the manager to hypothesize, refine, and evaluate potential marketing actions based on data collected.
Why a marketing manager would use marketing research for problem identification is to discover the symptoms of problems. This involves analyzing data, applying statistics, and using various information sources to gain insight into issues affecting sales, customer satisfaction, market share, etc., which is essential to creating effective marketing strategies and solutions.