Welcome to Westonci.ca, your go-to destination for finding answers to all your questions. Join our expert community today! Ask your questions and receive precise answers from experienced professionals across different disciplines. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

In computer science and user interface design, what principle guides the process of allowing users to modify data or commands provided to a system?
a) Input validation
b) User interface responsiveness
c) User input flexibility
d) Error handling efficiency