An example of a common ferromagnetic material is

a. plastic.
b. hydrogen.
c. nickel.
d. copper.

C

Explanation:

ferromagnetic in formally means that a substance can be magnetized the way iron would be.

Plastic is a no starter. It cannot be magnetized even in your dreams. Not A

Hydrogen is a gas. That does not eliminate it entirely, but it does lesson the chances. Not B

Copper conducts electricity (well). But it cannot be magnetized. Not D

The answer is Nickel. It is nearly as good at being magnetized as iron and in alloys it is better.

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong