Filtering occurs when a.)all light is absorbed b.) light reflects off a surface c.) some light is absorbed and some light is transmitted d.) all light transmitted

C.) some light is absorbed and some light is transmitted

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.