Answer: (C).Give her advice and tips for how to get things done correctly and efficiently.
Step-by-step explanation:
Question is: What are you most likely to do.
Every job has tricks that enable the employees to work more efficiently and thus be more productive. As the newest co-worker however, she may not know these tricks so does not know how to be as productive as the rest of you.
Best thing you can do is to give her advice and tips on how to be more productive in the company and hope that she takes it because that will be good for you and your co-workers as it will reduce your stress.