In non-ferromagnetic materials, most of the electrons are
paired and spinning in opposite directions
paired and spinning in the same direction
unpaired and spinning in opposite directions
not spinning

The correct answer is " paired and spinning in opposite direction.

Explanation:

Non ferromagnetic materials are the materials that are non-magnetic. They contain no iron ( ferrous). The electrons are paired in non ferromagnetic materials.

The electrons in a pair spin in opposite direction. Then, the magnetic fields will get cancel each other. There will be no magnetic field exist.

In non-ferromagnetic materials, most of the electrons are paired and spinning in opposite directions.

Ferromagnetic materials are the materials that are magnetic. They are able to create permanent magnets. They contain unpaired electrons.

Therefore, in non-ferromagnetic materials, most of the electrons paired and spinning in opposite direction.

radiation

explanation:

heat is transmitted by radiation

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)