Final answer:
A commercial pesticide handling establishment is a business which employs handlers. These businesses are responsible for the safe storage, distribution, and application of pesticides.
Step-by-step explanation:
A commercial pesticide handling establishment is a business which employs handlers (option c). Such establishments are responsible for the storage, distribution, and application of pesticides. These businesses employ workers who are trained in handling and applying pesticides safely to ensure that they do not cause harm to humans, crops, or the environment.