The chosen answer reflects a fundamental benefit of cloud systems, which is the ability to access applications and services remotely via the internet. This characteristic allows users to utilize software and resources without needing to install them on their local devices, thereby providing flexibility and convenience. Users can work from anywhere, as long as they have internet connectivity, making cloud systems especially advantageous for collaboration among teams and access to resources across various locations.
In contrast, increasing local storage capacity typically involves hardware upgrades, which does not utilize the cloud's capabilities. Running heavy graphical applications often requires substantial local processing power and graphics capabilities, which is contrary to typical cloud usage scenarios. While creating backup copies of local files is a function that can be performed using cloud storage, it is merely one aspect of cloud services, and the more comprehensive advantage lies in remote accessibility to applications and services, which is what makes option C the most representative of a common use of cloud systems.