The horse that no one expected to win inched his way to the lead, the jockey leaning forward in the saddle. “run, ace, run! ” ace crossed the finish line, and the crowd went crazy.

The correct answer for this question is the "climax" of the passage

Ifound this on google “what are motifs? a motif is a literary term that is an idea, object, or concept that repeats itself throughout a text. a motif gives clues to theme or reinforces ideas an author wants to emphasize.” i hope this for what your looking for