Answer:
the physical environment
Explanation:
Based on the scenario being described within the question it can be said that these are all ways of adapting the physical environment for the visually impaired student. By making all these changes to the physical environment or surroundings in which the visually impaired student will be attending, it allows them to more easily navigate their way and perform the necessary tasks that they need. Thus drastically increasing their quality of life.
It means to laugh bitterly or sarcasticaly
Because petsevution strengthened Christianity.
The interesting this about the people oft he Ancient Indus Valley is that the people seem to have just disappeared, and historians and archeologists cannot figure out what happened.
