Answer:
a. Â Human capital return on investment
Explanation:
Human capital return on investment  -
It helps to determine the profit return of the company or organisation on the per unit expenditure on the employees , is referred to as the Human capital return on investment  .
It is basically the interconnection between the profit of the company and the cost on the workforce .
hence , from the given scenario of the question,
The correct option is a.  Human capital return on investment  .