Graphics-intensive applications typically require substantial RAM and processing power to run smoothly. In the case of virtual machines running such applications, it is crucial to allocate enough RAM to meet the demands of the software. While network bandwidth and storage space are important, insufficient RAM allocation could cause the application to run very slowly or not function at all, especially when working with large graphic design files. As the question highlights a scenario involving graphic-intensive work, RAM takes precedence over the other options listed due to its direct relationship with application performance.