Which of the following elements are addressed by the WCAG? i. Resizability of text ii. Visually appealing design iii. Text alternatives iv. Keyboard accessibility v. Mouse input

The Web Content Accessibility Guidelines (WCAG) are built on four principles: Perceivable, Operable, Understandable, and Robust. Within these principles, WCAG specifies success criteria for various elements. It requires resizable text (SC 1.4.4), text alternatives for non-text content (SC 1.1.1), and full keyboard accessibility (Guideline 2.1). It also addresses pointer inputs (like a mouse) under Guideline 2.5, covering aspects like pointer gestures and target size. WCAG does not, however, mandate subjective aesthetic qualities like a "visually appealing design"; its focus is on functional accessibility, not on visual appeal.

A. This option incorrectly states that keyboard accessibility (iv) and mouse input (v) are false; both are explicitly addressed in WCAG.
B. This option incorrectly includes "visually appealing design" (ii) as a WCAG element and excludes keyboard and mouse input (iv, v).
C. This option incorrectly excludes resizability of text (i) and text alternatives (iii), which are fundamental WCAG requirements.

1. W3C, Web Content Accessibility Guidelines (WCAG) 2.1, "Guideline 1.1 Text Alternatives". This guideline's first success criterion, SC 1.1.1, requires text alternatives for any non-text content. (Covers element iii).

2. W3C, Web Content Accessibility Guidelines (WCAG) 2.1, "Success Criterion 1.4.4 Resize text". This criterion mandates that text can be resized up to 200 percent without loss of content or functionality. (Covers element i).

3. W3C, Web Content Accessibility Guidelines (WCAG) 2.1, "Guideline 2.1 Keyboard Accessible". This guideline states, "Make all functionality available from a keyboard." (Covers element iv).

4. W3C, Web Content Accessibility Guidelines (WCAG) 2.1, "Guideline 2.5 Input Modalities". This guideline makes it easier for users to operate functionality through various inputs beyond a keyboard, including pointer inputs (mouse, touch). For example, SC 2.5.1 addresses "Pointer Gestures". (Covers element v).

5. W3C, Web Content Accessibility Guidelines (WCAG) 2.1, "Introduction". The introduction and principles focus on functional access for people with disabilities, not on subjective aesthetic design. The term "visually appealing" is not a testable criterion within the guidelines. (Covers element ii).