Oh, okay, I think I get what they're doing now. So we're supposed to identify the Korean sound of a character/the characters "i" as in the word "this"!
Dulingo (since we're no longer allowed to write a suggestion/recommendation/explanation in the Report button):
Instead of just giving us a word ("this"), the challenge should have stated "Choose the corresponding sound", or something of the like. Then we would have known why we'd choose what we choose as an answer!
Look everyone, I know many of you are here to learn because of your Kpop groups. Hell even I'm here because I don't want to rely on subtitles to watch my group's Vlives, but thisw comment section is meant to HELP learners with their doubts NOT to talk about your favorite group and bias or way worse spread negativity. Every other language comment section on this site is useful... the Korean one is a mess and not helpful at all.
I'm leaving a link for the Hangul chart and its pronunciation. Maybe it will help those who are struggling.
이 is a demonstrative adjective, which means it comes before nouns. As an example:
이사과 - this apple
이사과는 맛았습니다. - This apple is delicious.
이것 is a demonstrative pronoun, which replaces a noun. For instance:
이것은 연필입니다. - This is a pencil.
있어요 comes from the verb 있다, which means "to exist".