Question

magnetism isnt just for sticking things together; it can also be used to keep things apart. a maglev train, for example, is a high - speed train that uses the principle of magnetic repulsion. magnets in the train tracks repel the magnets attached to the train. as a result, the train is suspended above the tracks. it runs with almost no friction to slow it down, which means it can reach super - high speeds. a maglev train once clocked in at 343 miles per hour!
why does a maglev train go so fast?
choose one option
a it has a large amount of friction.
b it uses only north - pole magnets.
c it has almost no friction.
d it uses only south - pole magnets.

Explanation:

The passage states that a maglev train "runs with almost no friction to slow it down, which means it can reach super - high speeds". Option A says it has a large amount of friction, which contradicts the passage. Options B and D say it uses only one type of magnetic pole, but the passage explains its speed is due to low friction from magnetic repulsion suspending it, not the type of poles used. So the correct answer is C.

Answer:

C. It has almost no friction.