Resiliency can be defined as the power or ability to return to the original form or to recover from illness, adversity, etc.
Ecological resilience, that would be the most accurate definition to follow in this case, can be defined as the capacity of an ecosystem to recover from a perturbation, disturbance or damage.
Therefore, in this context, "resiliency" means c-the ability of an ecosystem to recover from damage.
<span>its a expression for explaining the benefits of a good deed repaying it to others instead of to giving money.</span>
I'm thinking either C or B.