Magnetism can be considered . a.. nuclear property.. b.. physical property.. c.. chemical property.. d.. nonmetallic property.

b. Physical property

Explanation:

Magnetism refers to the property of a substance by which it attracts or repels other substance of similar nature. When domains in a substance align in a single direction, it is called a magnetic material. A magnet has two poles-south pole and north pole. Unlike poles attract each other where as like poles repel each other.

Since, this property is by virtue of alignment of domains and not the chemical composition, it is a physical property.