Final answer:
An Extranet is a private corporate network extended to authorized external users, distinct from an Intranet which is internal-only, a LAN that is geographically limited, and the Internet which is globally accessible.
Step-by-step explanation:
The correct answer to the question is b) Extranet. An Extranet is a type of network that allows authorized external users to access certain areas of a company's internal network. This extends the reach of the company's Intranet to external stakeholders such as suppliers, partners, customers, or other businesses, providing controlled access to the organization's services, information, and files. In contrast to this, an Intranet is a private network accessible only by the organization's members, employees, or others with authorization. A Local Area Network (LAN) is a network that covers a small geographical area, like an office building or school. The Internet is a global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide.
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