A widely used activity base for developing factory overhead rates in highly automated settings is a. direct labor dollars b. direct materials c. machine hours d. direct labor hours

c. machine hours

Explanation:

In the case of the highly automated settings, the activity base that is used is machine hours due to which we can able to find out the factory overhead

The machine hours are the hours that are engaged while operating in a machine. It is to be used to allocate the factory overhead based on the machine hours due to which we can easily find out the total manufacturing cost