Answer:
3.
Step-by-step explanation:
The last sentence is "Because there are so many benefits to a vegetarian diet, it is worth it is worth it to at least try eating more vegetarian meals to see if it works best for you."
So it does not bring up new point or new idea. There is no statistics to back up the argument. So the only choice left:
3 It emphasizes the importance of the topic
is the correct answer.