Answer:
Attrition
Explanation:
The right answer to the question is attrition and what is attrition in business sense: is simply means a situation where organization staff strength gradually and deliberately reduces as employees retire or resign and are not replaced.
So in this case Maria retire and nobody was hired to replace her position in the company and again all her subordinates were reassigned to other departments. It is also worth noting that attrition could also be a way of a company is losing her customer base as a result of other factors