What does the key sustainability key term, cradle$-$to$-$cradle mean?

the interdependent collaborations between many disparate organizations that create positive impacts on people and the planet.

the requirement for organizations to comply with an increasingly wide range of regulations covering emissions, carbon footprint, material recycling, etc.

an approach to sustainable products which looks to re$-$use component materials, recycling as much as possible.

compliance with regulations or optimized performance through increased efficiency.