Sustainable Minerals Use and Longer Projected Lifetimes for Scarce Minerals

Multiple Choice

Sustainable minerals use and longer projected lifetimes for scarce minerals can be achieved with all of the following, except ______________

A) increasing demand and lowering prices for products using these minerals
B) exploring for new reserves
C) recycling
D) finding more available substitutes for scarce minerals
E) researching more efficient and environmentally friendly techniques of extraction