Step 1: Understanding the Question:
The question is a matching task requiring us to pair various psychological research methodologies (List I) with their corresponding operational definitions (List II).
Step 2: Key Formula or Approach:
Identify the core mechanism of each psychological research design and find its matching description.
Step 3: Detailed Explanation:
• Let us match each method step-by-step:
• A. Naturalistic observation: This design involves observing subjects in their natural environments without manipulation. This matches with III ("Behaviour is studied in the settings where it usually occurs").
• B. Case Method: This is an in-depth investigation of a single subject, group, or clinical case. This matches with I ("A detailed information about individual is used to develop general principles about behaviour").
• C. Survey Method: This collects self-reported data from a large group using questionnaires. This matches with II ("A large number of people answer question about aspects of their views or their behaviour").
• D. Correlational Method: This statistical design measures the relationship between variables. This matches with IV ("In it researches attempt to determine whether, and to what extent, different variables are related to each other").
• Combining these pairings gives the sequence: A-III, B-I, C-II, D-IV.
Step 4: Final Answer:
This matching sequence is found in Option (A).