Which of the following is true of compasses?
a. compass magnets can only be deflected by electromagnets such as earth''s magnetic field
b. compass magnets can be deflected by earth''s magnetic field or other permanent magnets
c. compasses always point toward geographic north
d. compasses detect fluctuations in convection in the matle

the true statement about compasses is: B. Compass magnets can be deflected by earths magnetic field or other permanent magnets. Im pretty sure thats something that happens to a magnet This very same characteristic make a compass unable to function if it got close to another source of magnetic force, in most case the compass' needle will spin uncontrollably