What type of software delivery model allows users to access applications hosted remotely?

The correct choice is Software as a Service (SaaS). This model enables users to access applications hosted on external servers through the internet, rather than running on their local machines. SaaS offers several advantages, including ease of access from various devices, reduced need for local storage, and automatic updates managed by the service provider.

In contrast, on-premises software requires the user to install and maintain the application on their personal or company servers. Cloud application software, while similar to SaaS, typically means software provided through cloud platforms but may not explicitly highlight the service components such as accessibility and management inherent to SaaS. Personal application software refers to applications designed for individual use on personal devices, again lacking the remote hosting and accessibility features associated with SaaS. These distinctions illustrate why the Software as a Service model is the most accurate choice.