‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is of great use when a researcher has only a vague idea of the problem.

• A. Exploratory research design.
• B. Conclusive research design
• C. Diagnostic research design
• D. Descriptive research design