During which step of the research process are you most likely to conduct interviews with witnesses?

A research process consisits of the following steps;

Step 1: Identify the Problem.

Step 2: Review the Literature.

Step 3: Clarify the Problem.

Step 4: Clearly Define Terms and Concepts.

Step 5: Define the Population.

Step 6: Develop the Instrumentation Plan.

Step 7: Collect Data.

Step 8: Analyze the Data.

According to the above steps, conducting interviews with witnesses would be step 7 : Collecting Data of the research process. Interviewing to gather information which can later be analyzed in order to reach to a comprehensive solution.