(‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐) research means ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.

• A. Mere assumption
• B. Supposition to be proved/disproved
• C. A hidden thing
• D. Normal question that he intends to resolve.