Answer: Material Efficiency
Explanation: Material Efficiency is concerned with the use of physical processes that uses less material to produce higher outputs using recycled materials thereby reducing wastes.
Material efficiency uses the strategy of re-manufacturing and modular manufacturing, reuse and recycling of product components, using less material in product designs and redesigning manufacturing processes to use less energy, less water and less raw materials.
Material efficiency help not only in reducing manufacturing costs but also in reducing wastes and associated costs.