Earth is surrounded by a magnetic field because of

Although the crust is solid, the core of the Earth is surrounded by a mixture of molten iron and nickle. The magnetic field of Earth is caused by currents of electricity that flow in the molten core. These currents are hundreds of miles wide and flow at thousands of miles per hour as the earth rotates. hope it helped in someway ig idk

Explanation:

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic