Question

krista and tatiana hogan are participants in a(n) ______ of conjoined twins who are joined at the head
naturalistic observation
survey
experiment
case study

Explanation:

To solve this, we analyze each option:

• Naturalistic observation: Involves observing in natural settings, not focused on a specific case like conjoined twins.
• Survey: Uses questionnaires/interviews to gather data from many, not suitable for a unique case of conjoined twins.
• Experiment: Manipulates variables, which isn't applicable here as we can't manipulate the twins' condition.
• Case study: Examines a unique or rare case in depth. Conjoined twins joined at the head (like Krista and Tatiana) are a rare case, so a case study is appropriate.

Answer:

D. case study