Which statement best describes the Strategic Defence Initiative?

• A. It would create a nuclear umbrella and intercept missiles with space-based lasers
• B. It would increase sea-based missiles
• C. It would rely on conventional arms only
• D. It would dismantle all missiles immediately

Answer: (A)

The main idea being tested is how the Strategic Defence Initiative aimed to protect the United States from a nuclear attack by creating a defensive shield that could shoot down incoming missiles, especially using space-based technologies like lasers. SDI was about intercepting missiles in flight to reduce vulnerability and bolster deterrence, rather than expanding offensive forces or relying only on traditional arms.

The best description is that it would create a nuclear umbrella and intercept missiles with space-based lasers. It envisions a defensive system in space and on Earth capable of destroying incoming missiles, which would in turn enhance security and deter attack.

The other options don’t fit because SDI was not about increasing sea-based missiles, not about relying solely on conventional arms, and not about dismantling missiles immediately.