Network Question

Wwe have three buildings within two city blocks and the warehouse will be the fourth bldg. They run on separate networks, company wants to exchange data among them. Bldg 1 wants to access servers in research department in bldg 2. In addition, sales department in bldg 3 wants video conferincing training sessions, next door the warehouse 50 packing personnel in fullfillment department will be riding up and down the aisles on forklifts pulling inventory what kind of transmission media would you recommend for each different bldg and dept of the company? why type of media should the company request ffrom its internet service supplier for connecting the corporate WAN to the internet