Compasses are besigbed so that they point to earth's magnetic north. What are some things that would prevent a compass from pointing to earth's magnetic north pole? Select all the correct answers.

Dead compass batteries
A non-magnetic compass needle
Being in a sealed wooden box
Being in a remote forest far from cities
A strong interfering magnetic field
High altitude

Dead compass batteries

A non-magnetic compass needle
Being in a sealed wooden box
A strong interfering magnetic field