Q: The energy is always conserved for a system which is
(a)isolated only
(b)non-isolated only
(c)both isolated and non-isolated
(d)none of above
Correct Answer: (a)
The correct answer is (c): both isolated and non-isolated. Subject: Science & Technology | Sub-topic: Physics Note: This answer was determined through AI-based research. Verify against the official answer key when available.