Productivity is the combination of?

Productivity relates the output of goods and services of the company to the inputs of all the resources used in the production of goods and services. In other words, it measures how well a company transforms resources into products. Productivity is the combination of efficiency and effectiveness. This means that a company that only attains efficiency or effectiveness is either partially productive or not productive at all. To be productive, a company needs to be efficient and effective at the same time
hope it helped

Ithink it would be choices a and b. hope this !