Which of the following sets of words are not related? (magnetic field, sunspots) (pulsar, spinning) (dynamo theory, auroras) (domain, magnet)

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.