Charts turn into images when exported and should include _______________ text for accessibility.

Charts turn into images when exported and should include _______________ text for accessibility.

• A. Alternative
• B. Caption
• C. Label
• D. Metadata

Answer: (A)

When a chart is exported as an image, the visual data it conveys isn’t accessible to everyone unless there is a textual description tied to the image. Providing alternative text gives screen readers a concise summary of what the chart shows, so users who can’t view the image still grasp the main message and the data it contains. Good alt text describes the chart’s purpose and highlights the key data or trends, such as what the chart represents, the categories, the axis units, and any notable results. For example, you might describe a bar chart as “Bar chart of quarterly sales by region in 2024; North region leads with $1.2M, etc.” This lets someone relying on assistive technology understand the chart without needing to see it. Caption, while useful for sighted readers, is usually visible text beneath or beside the image and isn’t reliably read by screen readers as part of the image content. A label refers to names attached to specific parts of the chart (like axis labels or data series) rather than a description of the entire image. Metadata consists of information about the image itself (like file type, creator, or date) and isn’t typically presented to the user as a description of what the chart shows. Therefore, the best choice for accessibility is alternative text.

When a chart is exported as an image, the visual data it conveys isn’t accessible to everyone unless there is a textual description tied to the image. Providing alternative text gives screen readers a concise summary of what the chart shows, so users who can’t view the image still grasp the main message and the data it contains. Good alt text describes the chart’s purpose and highlights the key data or trends, such as what the chart represents, the categories, the axis units, and any notable results. For example, you might describe a bar chart as “Bar chart of quarterly sales by region in 2024; North region leads with $1.2M, etc.” This lets someone relying on assistive technology understand the chart without needing to see it.

Caption, while useful for sighted readers, is usually visible text beneath or beside the image and isn’t reliably read by screen readers as part of the image content. A label refers to names attached to specific parts of the chart (like axis labels or data series) rather than a description of the entire image. Metadata consists of information about the image itself (like file type, creator, or date) and isn’t typically presented to the user as a description of what the chart shows. Therefore, the best choice for accessibility is alternative text.