12. <span>When an author uses a concrete object to represent an idea or emotion, it is called symbolism. The correct option among all the options that are given in the question is option "B".
13. </span>In “Babylon Revisited,” Fitzgerald choose the title to be metaphoric of Paris because <span>It represents the ruins of American "royalty" in Paris. The correct option among all the options given is option "B".
14. </span>"Babylon Revisited" is the one among the following that <span>uses allegory to symbolize something deeply spiritual or to present a moral lesson. The correct option among all the options is option "A".</span>
1. A predicative nominative is a noun or a pronoun which follows a linking verb and refers to something before that verb. In your case, the correct answer is B, because "a shelter" goes after the linking verb "is", and refers to "a lean-to".
2. A participle has the form of infinitive + ing. In this case, the answer is D, flourishing.