Answer:
D) the cost of the lease on the mower storage facility
All the other options are variable cost.
Explanation:
Fixed cost are costs that do not change as a result of increase or decrease in the amount of goods and services produced. They are expenses that have to be paid irrespective of business activities such as taxes, salaries of administrative staffs, lease of equipment, insurance and so on.
Variable costs are costs dependent on the amount of goods and services produced such as cost of fuel, cost of raw materials, cost of labor to run a machinery.