Answer:
The correct answer is C
Step-by-step explanation:
Efficiency is the term which is described as the ability for avoiding the waste materials, money, energy, efforts and the time in producing something in order to achieve the desired result or consequence. In short, it is a concept which is quantitatively, measurable determined through the ratio of the useful output to the aggregate input.
Therefore, the efficiency occurs or happen when the economy is producing what the people want which is available at the very least possible cost.