"Exploding a moment" is a term which refers to the use of imagery (strong, descriptive language which creates vivid images in the reader's mind) in order to make the reader actually see or feel what is being described in the text. Having this in mind, the correct answer is the third sentence - His silk tie gleams in the sunlight.
Evidence should be your answer
B: Despite the short prep time, Washington team members Enzo Garcia and Nicole Marconi had no problem speaking first, explaining their support for recent actions in the Middle East.