I have a test where I am given the following article, what is an answer for the question: Who are the people in a photograph that begin moving? ?

Julie and her boyfriend, Nick, are celebrating Julie's 24th birthday with their friends Trevor and Amanda. Julie and Nick start to discuss their future when Nick is called in to work, urgently. He has to go to the meeting because he is up against co-worker Dave for a promotion. As the four friends drive back to the city there's an accident with a semi-truck. Of the four friends, Nick is the only survivor. Later, when looking at a photograph of himself and Julie, everything in the room begins to shudder and shake, while the people in the photograph begin moving.
One year later, Nick suffers a blinding headache and nosebleed at work, while presenting an important sales pitch to investors. As a result, he is given a week's suspension. Back home, Nick looks at photographs from Julie's birthday and somehow manages to transport himself back to the moment just before the fatal accident. This time, he knows how to avoid the accident and he awakens in a new timeline where Julie is living happily with him. However, in this reality, Nick's life is ruined when he is fired for backing up his friend and now colleague Trevor.
Later, Nick sees a Christmas photograph of him, his friends and colleagues, and realizes that this was the point at which a crucial deal was made, resulting in Dave's promotion. Nick decides to try to alter this in his favor, so he concentrates on the photo in order to trigger another episode. Sure enough, he finds himself at the party.

Nick