Two differentiate between north and south poles of magnets

A permanent magnet has two different magnetic poles, called the north and south poles. The field lines are inside the magnet. Magnetic poles of the same charge repel each other. Thus, the north pole with another north, the south pole and with another south pole are repelled.

Explanation:

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.