Question

Terrorist threats loom outside of airports as well, impacting the safety of travelers across the world. In a coordinated attack in 2005, suicide bombers with ties to al-Qaeda conducted attacks against the London public transportation system, killing 52 people and injuring more than 700. Bombings on trains and in train stations have killed hundreds in Spain, in India, and in Russia. Terrorist attacks have plagued developed and underdeveloped nations alike all over the world. Most often, the attacks are the result of improvised explosive devices (IEDs) detonating in widely trafficked public spaces or specifically targeted military or government posts or embassies. Organized and coordinated, these acts usually rely on recruiting impressionable young men and women willing to sacrifice their lives.

What is the main idea of the passage?

Terrorist groups often work alone to carry out attacks.
Terrorist groups like al-Qaeda have been neutralized by the United States.
Terrorist groups are disorganized but have managed to launch successful attacks.
Terrorist groups pose a security threat to nations throughout the world.

Answer 1

The main idea of the passage is: **Terrorist groups pose a security threat to nations throughout the world.**