Answer : 4. "All of the above"
Explanation :

Answer: D) All of the above Explanation: Networking is a socioeconomic business activity by which businesspeople and entrepreneurs meet to form business relationships and to recognize, create, or act upon business opportunities, share information and seek potential partners for ventures.   Examples of Business networks are :: 1. Casual contact networks 2. Strong contact networks 3. Community service clubs 4. Professional associations 5. Online/social media networks.