Which of the following statements represents an opinion?

Question

Quizplus · Accepted Answer

This is an opinion. It includes the word "boring", and cannot be proven with research. Additionally, what may be "boring" for someone, may not be "boring" for someone else. 
Bali tigers are extinct is incorrect. This is factual information that can be proven with research. It is specific in nature and does not express opinion. 
The cost of air travel has increased 20% in the last five years is incorrect. This is factual information that can be proven with research. It is specific in nature and does not express opinion.  It is specific in nature and contains a statistic.
The weather prediction forecasts snow in the coming weeks is incorrect. This is factual information that can be proven with research. It is specific in nature and does not contain an opinion. Additionally, a forecast is not an opinion, but an idea based on research.

Which of the Following Statements Represents an Opinion