Answer: Extranet
Explanation:
An extranet is one of the type of intranet which can be partially accessible outside the organization and any type of business by the authorized person.
The extranet is known as the control private network in which the customers and the vendors gain various types of data or information that is related to business without accessing the whole network.
The extranet is the part of the website which is private. The extranet uses various types of internet technology for sharing business related information to the customers.
Therefore, Extranet is the correct option.
