Answer:
Labour; quality of products sent to customers.
Step-by-step explanation:
This question wants to test us on what is known as ''Labour productivity". The term labour productivity simply means the number of goods and services or products a country or even workers in a particular organization or company produces per working hour or working time.
In Economics, the value of labour productivity can be calculated and represented mathematically by making use of the formula below;
Labour productivity = total output/ total input.
One of the main importance of knowing the labour productivity of workers is to determine the quality of the products your company or organization is producing.