Which item is not a provision of the 1967 Outer Space Treaty?

• A. States are barred from putting conventional weapons in space or firing them into, through, or from space.
• B. Use of the moon and other celestial bodies is limited to peaceful purposes—no military installations, maneuvers, or weapons tests are permitted
• C. States may not make claims of sovereignty on the moon or any other celestial body.
• D. States are liable for any damage caused by their space objects.

Answer: (A)

The key idea is what the Outer Space Treaty actually bans versus what it doesn’t. The treaty prohibits placing weapons of mass destruction in space or on celestial bodies, and it forbids military bases, installations, and weapons tests on the Moon and other celestial bodies, as well as sovereign claims and national liability for damage caused by space objects. The statement that conventional weapons are barred in space goes beyond what the treaty specifies, because it limits only weapons of mass destruction, not conventional weapons. That’s why this choice is not a treaty provision. The other items match the treaty’s provisions: peaceful use of the Moon and celestial bodies, no sovereignty claims, and liability for damage.