What does suitability testing aim to determine?

Suitability testing focuses on evaluating whether the functions of a software system are appropriate and fit for the specific tasks they are intended to perform. It assesses whether the system meets the actual needs of users and whether it can effectively support the tasks that users are trying to accomplish. This type of testing is crucial for ensuring that the software is not just functional but also relevant and valuable for its intended use.

While compliance with legal standards, processing speed, and user satisfaction are all important considerations in software testing, they fall under different aspects. Compliance ensures that the software adheres to relevant regulations, processing speed relates to performance testing, and overall user satisfaction pertains to usability testing. Suitability testing specifically hones in on the alignment between the software's functionalities and the tasks it was designed to support, making it the most accurate answer in this context.