Question

the key difference between an intranet and an extranet is that an intranet multiple choice is closed to public access, while an extranet allows selected outsiders access to the network uses technology based on current internet standards, while an extranet uses technology based on internet2 uses public lines to transmit information, but an extranet uses private lines allows many different organizations to share data and resources, while an extranet is limited to only two organizations

Explanation:

An intranet is a private network within an organization, inaccessible to the public. An extranet extends this by allowing selected external parties (like business partners) access. It's not about Internet2 technology, line - type (public or private), or number of organizations as described in other options.

Answer:

A. is closed to public access, while an extranet allows selected outsiders access to the network