Which of the following is an advantage of using the online version of QuickBooks?

Using the online version of QuickBooks provides enhanced mobile access and collaboration features, which are significant advantages for users. Since QuickBooks Online is cloud-based, it enables users to access their financial data from any device with internet connectivity, whether it's a smartphone, tablet, or computer. This flexibility allows business owners and their teams to work remotely and securely collaborate in real-time, making it easier to manage finances, generate reports, and make informed business decisions on the go.

Furthermore, online access encourages teamwork as multiple users can work simultaneously on the same company file, improving efficiency and communication. This is particularly beneficial for businesses with employees or accountants in different locations. The ability to collaborate in real-time reduces mistakes and enhances productivity, which is essential in a fast-paced business environment.

The other options do not reflect the benefits of the online version accurately. The online version allows multiple company files and does not require a one-time purchase, as it operates on a subscription model. Additionally, while maintenance and updates are less burdensome, the main appeal lies in its accessibility and collaborative capabilities.