Which of the following is true about internal-operational communication?

A) It mainly includes the orders and instructions that supervisors give to their employees.
B) It mainly includes a business's communication with its suppliers.
C) It mainly includes a business's communication with its customers.
D) It mainly includes a business's communication with government agencies.
E) It mainly includes the instructions that supervisors of a company give to vendors.

Internal-operational communication refers to the communication that takes place within a company or organization, such as between supervisors and employees. Therefore, option A is the correct choice as it accurately describes this type of communication. Option B refers to external communication with suppliers, option C refers to external communication with customers, option D refers to external communication with government agencies, and option E refers to communication with vendors, which may or may not fall under internal-operational communication depending on the specific context.