Concept:An intranet is a private network that uses internet protocols but is available only to authorised people inside an organisation.
Explanation:An intranet is not open to the public or to all website visitors.
It uses standard internet protocols, such as TCP/IP, for communication.
Access is restricted to employees or members of the organisation.
Option A is wrong because visitors to an organisation's website cannot access the intranet.
Option C is wrong because an intranet does use internet protocols.
Option D is wrong because an intranet is private, not public.
Option B correctly states that an intranet is a private network using internet protocol and accessible by employees.
Answer:B. Private network that uses internet protocol and is accessible by employees of an organization.