What is true of any ferromagnetic material?

A. it has two north poles

B. It is difficult to magnetize

C. It can be magnetized

D. It is a magnet.

C. It can be magnetized

Explanation:

As we know that Ferromagnetic materials are made up of small domains which can be treated as small magnets.

These small magnets are aligned in random directions so that the net magnetic field due to all small domains will cancel out and it gives no magnetic field by their own.

Now when these type of ferromagnetic substances are placed in external magnetic field then due to the external field these all domains are aligned in the direction of external magnetic field.

Due to this alignment of domains ferromagnetic substance produce their own field and this phenomenon is known as magnetization

So here correct answer will be

C. It can be magnetized