Answer:
The answer is A - INTRANET.
Explanation:
Option B is not the correct answer. An intercom is a stand-alone voice communications system for use within a building or small collection of buildings, functioning independently of the public telephone network. Intercoms are generally mounted permanently in buildings and vehicles
Option C is not the correct answer. In telecommunication, a transponder is a device that, upon receiving a signal, emits a different signal in response.
Option A is the correct answer. An intranet is a computer network for sharing corporate information, collaboration tools, operational systems, and other computing services only within an organization.
