Which of the following sentences is most representative of a summary sentence for the passage about the Bermuda Triangle?
1) The problem with having a larger Bermuda Triangle is that it increases the odds of accidents.
2) The area that is called the Bermuda Triangle happens to fall within one of the busiest navigational regions in the world, and the reality of greater activity creates the possibility for more to go wrong.
3) One of the biggest challenges in considering the phenomenon is deciding how much area actually represents the Bermuda Triangle.
4) Researchers have never been able to find anything truly mysterious about what happens in the Bermuda Triangle, if there even is a Bermuda Triangle.