Question

Which of the following is true of compasses ?

A.compass magnets can be deflected by Earth's magnetic field or other permanent magnets .
B. compasses detect fluctuations in convection in the mantle.
C.compasses always point toward geographic north.
D.compass magnets can only be deflected by electromagnets such as Earth's magnetic field.​

Answer 1

A. compass magnets can be deflected by earth magnetic field or other permanent magnets