Final answer:
The incorrect statement about cloud computing is that data stored in a cloud computing system is always secure.
Step-by-step explanation:
The incorrect statement about cloud computing is option D. Data stored in a cloud computing system is not always secure.
While cloud computing provides various benefits such as on-demand access to resources and software, as mentioned in option A, it is not immune to security risks. Data stored in a cloud computing system can be vulnerable to unauthorized access and data breaches. Therefore, it is important for organizations and individuals to implement security measures to protect their data.
For example, they can use encryption methods, strong passwords, and multi-factor authentication to enhance the security of their data stored in the cloud.