Answer:
La opción correcta a la cual se refiere la frase "el ciudadano es el eslabón clave en esta cadena de la sostenibilidad" es:
A. La viabilidad de una ciudad depende de sus habitantes.
Explanation:
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It all depends on your grade level. For sophomores, I would assume that it is an average score ( I am a sophomore myself, but I received a 1270). For juniors, this is below average. Your schools curriculum comes into play as well. So in short, yes or sophomores and no for juniors.
