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Answer:
A. able to be maintained
sus·tain·a·ble
/səˈstānəb(ə)l/
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adjective
adjective: sustainable
1. able to be maintained at a certain rate or level.
conserving an ecological balance by avoiding depletion of natural resources.
2. able to be upheld or defended.
Explanation:
Hope this helps.
This should be a writer's opinion
That is because it might differ based on who was talking. Some might disagree that it has become run-down, or some might say that it has become such way before "just recently".
