The research work is conducted to test the truth of ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.

• A. Problem
• B. hidden things
• C. Hypothesis
• D. (‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐) issue.