Which type of testing assesses the ease of use for users with disabilities?

Accessibility testing is the type of testing that focuses on evaluating how easily users with disabilities can access and use a system or application. This form of testing ensures that all users, regardless of their physical or cognitive abilities, can effectively interact with the software. It involves assessing features like screen reader compatibility, keyboard navigation, color contrast for visibility, and so on, which are crucial for providing an inclusive user experience.

Unlike performance, load, or security testing, accessibility testing specifically targets the needs of users with disabilities, ensuring compliance with accessibility standards such as WCAG (Web Content Accessibility Guidelines). This emphasis on user experience for individuals with disabilities is why accessibility testing is the correct answer in this context.