Which practice fits the definition of conservation?

using more of a mineral resource than needed

not using a necessary mineral resource at all

mining a mineral without regard to the surface soil and vegetation above it

recycling cans that contain a material like aluminum

recycling cans that contain a material like aluminum

Explanation:

Conservation of resources is the sustainable use of available resources to ensure their continuous availability.

Resources are limited in the environment and they cannot satisfy all of our wants. Therefore, we need to ration them in the best way possible.

3. dark matter

empty space could also be a simple vacuum