Which word would best replace the bolded word, significant, in the fourth sentence?

C) Pivotal

Explanation:

Pivotal and significant are both synonyms and they both mean "Important or highly needed".

it's like watching a fable, it's not really about the animals but rather it has a meaning that is understood by us and that is implicit, not explicitly said. implicit ideas are common and are used in almost all works of art, from writing to painting to sculpting.