Which phrase describes earth's magnetic declination?

I just took the test and got 100%

1: B, unlike poles repel each other

2: D, all of the above

3: A, domain; no

4: D, the angle between true north and north indicated by a compass

5: D, forms circles the go around the wire

6: D, causes alignment of the domains in the iron

7: B, the magnetic field B

8: C, perpendicular to both the current and the magnetic field

9: A, it rotates 180 degrees

answer: i pick a

explanation:

this is a good question! i'll do some research and come back when i have the answer!