Answer:
1 is A 2 is F 3 is A 4 is G
Explanation:
first one: 'sea horses are unusual' is an opinion because it cannot be backed by facts. some people might say that they look very normal.
second one: G and H are opinions. F and I and facts but sea horses' life span isn't mentioned in the passage.
third one: its said in the passage that seahorses are about 1.5 to 12 inches long. 1 is the only option that doesn't fit in that range.
fourth one: G is only one that cannot be backed by facts.
An action that started in the past i think atleast
I don't know this for sure but if an author has something to declare and they can't back it up it's just an idea. So if you want to identify the claim you have to have statistics and facts to prove what you're saying. But remember I am not am expert so whatever you think the answer is go with it. Hope this helps ;)