it would be 1 because you would need to gather info
it would be 2 because you would need to evaluate what the person is saying
it would be 4 because if you question their evidence then you will get more info and be able to look it up or ask more people to know if what they are saying is right
cognates are recognizable words in other languages. They look very similar to their counterpart in English. if you look at the words spelling and use context clues it's pretty easy to guess what they mean