The earliest mineral observed to showmagnetic properties is called A leadstone
Blodestone
Cloadstone
Dnone of the above
E all of the above

B: lodestone

Explanation:

Each magnet has its magnetic poles, north (N) and south (S). Diversified ones are attracted and reptiles of the same name are repelled, similarly to charges, so it was considered possible to separate the magnet at the north and south poles.

Magnetic properties can be lost if the magnet is exposed to high temperatures if it falls or due to some mechanical shocks.

it has to be b, about 97 percent.