Arepetitive image or idea in a text is a mood motif. central idea. theme.

The correct answer is Motif.  

Motif refers to a recurring object, concept, or structure in a piece of literature. They tend to be obvious because they are repeated throughout the text . In other words, symbols, and objects that are repeated throughout a  novel, which usually  represent more than their  obvious meaning, constitute a form of motif.  For instance, Mirrors and Trees.

In contrast, in literature, mood refers to the emotions evoked by a text or the feeling of the  atmosphere that the author is describing. That is to say, the mood is related to what  the author makes you feel when you read his or her  writings. While the theme is usually expressed by a  complete sentence, and it refers to the main idea or message conveyed by a piece of literary work.

motif

Explanation:

cassius, casca, and their allies plant false documents to manipulate brutus to join their cause to remove caesar. after doing so, they visit brutus at night in his home to persuade him of their views. there they plan caesar's death. brutus is troubled but refuses to confide in his devoted wife, portia. on 15 march, caesar's wife, calpurnia, urges him not to go to the senate. she has had visionary dreams and fears the portents of the overnight storms.

nambe vazhkaile elam nala irukum