Answer:
The correct answer is - internal customers rely on someone else at the same company to help do their job
Explanation:
An internal customer is a person within an organization or service care who is someone dependent on someone from the organization, he can be someone from the staff or someone rely on the other person of the organization.
The internal customers may be a situational customer and not a customer always and have a role as an additional positive response unlike the external customers with great importance.