How many input modalities are focused on in the new guidelines of WCAG 2.1?

The correct answer highlights the emphasis on enhancing accessibility for a variety of user input methods in the Web Content Accessibility Guidelines (WCAG) 2.1. This version of the guidelines expands the considerations beyond just traditional mouse and keyboard interactions to include multiple input modalities. These modalities are primarily touch, keyboard, mouse, and voice, recognizing that users may interact with web content in diverse ways based on their needs.

By acknowledging three input modalities, WCAG 2.1 encourages designers and developers to create websites that are usable by individuals who rely on different types of input devices, thereby fostering inclusivity and improving the overall user experience. This approach aligns with the objectives of web accessibility, ensuring that all users, regardless of their preferred method of interaction, can access and engage with web content effectively.