Final answer:
When using visual signals to support recovery efforts, follow guidelines such as contrast ratio, size, and ratio to ensure effectiveness.
Explanation:
Guidelines for Visual Signal in Recovery Efforts:
- Contrast: Visuals should have a contrast ratio of at least 4.5:1 for readability.
- Size: Make sure text and images are of an appropriate size for clarity and visibility.
- Ratio: Consider the ratio of elements for visual appeal and balance.
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