Which statement about chemicals needed to produce sarin gas is accurate?

• A. They are readily available
• B. They are expensive
• C. They are widely used in agriculture
• D. Chemicals needed to produce sarin gas are banned

Answer: (D)

Access to the chemicals needed to produce sarin is tightly controlled by international law. Sarin is a nerve agent, and the production, stockpiling, and transfer of sarin and many of its precursor chemicals are banned under the Chemical Weapons Convention, with strict enforcement and licensing. Because of these legal and safety controls, these chemicals are not readily available to the public or to ordinary industries. That’s why the statement that they are banned is the best description of their status. The other ideas don’t fit because the exact precursors are not openly accessible for weaponization, they aren’t legitimately used for ordinary agriculture as sarin-related substances, and the costs or availability in everyday contexts are not reliable indicators given the strong regulatory framework surrounding them.