{"knowledge_schema": {"broad_category": "Physics \u2192 Nuclear Physics \u2192 Many-Body Interactions", "refinement": "This problem focuses on the assumptions underlying the impulse approximation in nuclear interactions, particularly regarding nucleon behavior in a nucleus.", "specific_scope": "The task is to identify which set of assumptions collectively supports the idea that nucleons behave like free particles during interactions, despite being part of a nucleus.", "goal": "Determine the correct combination of assumptions that imply the impulse approximation for nucleons in a nuclear context."}, "summary": "The problem involves understanding the impulse approximation in nuclear physics, which assumes that nucleons behave like free particles during interactions. To identify the correct assumptions that support this approximation, we need to analyze how each assumption relates to the behavior of nucleons in a nucleus. The goal is to find the combination of assumptions that collectively imply that nucleons interact independently and experience no binding forces, thus behaving as free nucleons."}