Answer:
c. telecommunication
Explanation:
A global information system (GIS) is a system that is used to storage all the data from the headquarters of a company and all its subsidiaries in one place. This system works in all the places where the company is and the telecommunication infrastructure of the countries where the subsidiaries are located must be taken into consideration because it needs different technologies and applications and if they are not available or if they don't work properly, the system won't be able to store, retrieve and transmit information and it won't allow a good communication between the offices.
