Me . i don't understand this at all

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block