Question

intercontinental ballistic missiles made it possible for a country possessing them to
shoot down enemy airplanes.
strike targets far away.
launch satellites into space.
detect enemy troops at night.

Explanation:

Intercontinental ballistic missiles (ICBMs) are designed for long - range strategic strikes. "Shoot down enemy airplanes" is the function of anti - aircraft systems. "Launch satellites into space" is done by launch vehicles (though ICBM technology can be adapted, but it's not their primary purpose). "Detect enemy troops at night" is the function of reconnaissance systems. ICBMs are mainly for striking targets at long distances (intercontinental range), so the correct option is the one about striking far - away targets.

Answer:

B. strike targets far away.