Help wanted here pleaz.

The material that keeps its new shape after it is stretched is called?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

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.