Question

____________ is not made of matter
a. gold ring
b. iron nail
c. light ray
d. oil drop

Answer 1

Lightray is not made of matter.

To be a matter it should occupy space physically as well as have inertia. Matter contains various particles of different masses and sizes as well. They can be physically felt to occupy the space.

 Light rays are energy and are not matter as they do not occupy space on their own. The rest options occupy the physical space and have mass so they are matter. 

Answer 2

Explanation:

lightray is not made up of matter