Final answer:
Ensuring publications are available in braille supports FEMA's principle of inclusivity and accessibility.
Step-by-step explanation:
The key principle of ensuring that publications are available in braille supports the fema (Federal Emergency Management Agency) key principle of inclusivity and accessibility.
By providing publications in braille, individuals with visual impairments are able to access information and participate in educational and informational resources, which aligns with the FEMA principle of ensuring that all people can receive the necessary support and resources during emergencies and crisis situations.