Detailed Explanation:

The correct answer is An American anti-missile system (Option 3). THAAD (Terminal High Altitude Area Defense) is a missile defense system developed by the United States to intercept and destroy short, medium, and intermediate-range ballistic missiles during their final phase of flight.

THAAD is designed to intercept ballistic missiles both inside and outside the Earth's atmosphere. It is an important part of the U.S. missile defense network and has been deployed in countries such as South Korea and Saudi Arabia.