Answer:They facilitate information exchange among business partners.
Explanation: An extranet is a private network, a website which can be accessed by authorised people or Organisations through the internet,different from Intranet which can not be accessed through the internet. Extranets arencontrolled to give access to partners,vendors,business associates about the services or products of a given Organisation.
EXTRANETS FACILITATES INFORMATION AND DATA EXCHANGES AMONG PARTNERS.