The answer is magnet because it would be really hard to move a magnet across a steel table since it would attract to the steel-not making it able to move.
B is the safest. Taking exist A might gurantee your saftey but not your friend as it will probaby fall under your weight. On the other hand the lion have been starved for two months which probably means they are dead.
The police officer suspects the newspaper delivery person. The absence of Tuesday's and Wednesday's newspaper indicates that the delivery person knew there was no one there to read it.