Below are various resources and activities for a social services agency that helps homeless people get housing. Indicate whether each of the following is likely to be an activity, structural, or executional cost driver:

a. Placing a purchase order for materials

b. Processing a sales order for a customer

c. Reorganizing the existing equipment in the plant so that sequential operations are closer

d. Determining store locations within a region

e. Assessing the types of technology to be used in stores

f. Spending labor time working on a product

g. Authorizing lower-level employees to make decisions

h. Providing employees with cost information