Answer the following question given this paragraph: 

Some materials are natural permanent magnets. The most magnetic material in nature is the mineral magnetite, also called lodestone (see Figure below ). The magnetic domains of magnetite naturally align with Earth’s axis. The picture on the left shows a chunk of magnetite attracting small bits of iron. The magnetite spoon compass shown on the right dates back about 2000 years and comes from China. The handle of the spoon always points north. Clearly, the magnetic properties of magnetite have been recognized for thousands of years.


Q: Also called lodestone, the mineral magnetite is the most powerful what?

 Choices:

- material on Earth

- synthetic magnet

- healing magnet

- natural permanent magnet

A:
natural permanent magnet
