The following technology matrix describes the relationship of certain industries within the economy to each other. (A&F, agriculture and food; RM, raw materials; M, manufacturing; F, fuels industry; U, utilities; SI, service industries) 
Which industry is most dependent on its own goods for its operations?
Definitions:
Activity-based Costing
A costing method that assigns overhead and indirect costs to specific activities, providing more accurate product costing.
Activity Cost Pools
Aggregations of all the costs associated with particular activities, used in activity-based costing to allocate costs more accurately.
Activity Measures
Metrics used to assess the efficiency and performance of different business activities, often in the context of activity-based costing.
Overhead Costs
Expenses not directly tied to the production of goods or services, such as rent, utilities, and insurance.
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