Which of the following describes a temporary magnet

1, a magnet that always acts as a magnet
2, a magnet that acts as a magnet as long as there is an external magnetic field
3, is a magnet even if there is a magnetic field or not
4, is always a magnet

Its 2 , a temporary magnet is a magnet thats only a magnet with a magnetic field. Like how horseshoe magnets cause nails to become temporary magnets

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."