Final answer:
The correct answer is option a. Facility-level activities are the costs that a company incurs regardless of the number of units, batches, or products produced, like maintenance or rent.
Step-by-step explanation:
Activities that are incurred regardless of how many units, batches, or products are produced within a company are referred to as facility-level activities. These activities include things like factory maintenance, property taxes, and rent, which do not change with the volume of production.
For instance, whether a facility produces 10 units or 10,000 units, the cost of factory rent or the salary of the plant manager would stay constant.