Answer: Opinion
Facts and opinions are often uttered in the same breath; the terms have a huge difference in their meanings. Whether a statement is a fact or an opinion depends on the validity of the statement. While a fact refers to the something true or real, which is backed by evidence, documentation, etc. It can be considered as universal truth. On the other hand, opinion is what a person believes or thinks about something and is not true for everyone. And when I say everyone, I literally mean every living person in this entire world.
In finer terms, a fact is a proven truth, whereas opinion is a personal view, that represents the outlook of an individual, which may or may not be based on the fact.
Now let's take the fresh water fishing for an example. How will you understand that it is an opinion or fact? Well in simple terms, like I just said, fact is something which everyone will agree on. And it is backed up by logical evidence. But from the above context, " Fresh water fishing is the most popular hobby in the UK. ", the word most shows that not everyone agrees on it. Yes, more than 50% of the population in UK may agree that they like it, but for it to be a fact, 100% population of UK has to agree that they like the sport. Moreover, what makes us humans is because of different opinions. Everyone may or may not agree to something. Opinions between a large quantity of people will always differ. But theoretical things, especially law's and formula's were proven and will always be considered to be true. For example, Earth orbits the Sun is a fact, since everyone has to agree on it as there is proof for it. (Sorry for making it so big)
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hope it helped
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