Answer:
Direct labor hours.
Step-by-step explanation:
An activity base is considered every activity used in overhead allocation.
In service industries, it is more likely that the base of activity is direct working hours, to use this indirect cost allocation base, there must be an estimated amount of the total direct working hours that are used during the period. , using the estimate of a previous period as a projection for retraction or business growth. Once the estimate has been determined, the predetermined indirect rate used for indirect cost allocation can be found by dividing the estimated total indirect cost by the estimated total direct working hours.