"아이가 손으로 먹습니다."
Translation:The child eats with his hands.
For anyone wondering what "으로" means in this context I found this:
으로 is used for words which have a final consonant, and 로 for words witthat a final consonant. (Exception: 로 is still used for words which have ㄹ as a final consonant.)
I. 으로/로 is used for tools/methods/transport with which you do something.
Eg.1 가위로 종이를 잘랐다 = With scissors, I cut a paper. 연필로 그림을 그렸다 = With a pencil, I drew a picture. 활로 사냥을 했다 = With a bow, I did hunting.
It was not singular for most of its history. This is a recent phenomenon that people want to use “they” and “their” for singular because it is genderless. It might catch on since we use “you” for both singular and plural, but give people time to get used to it. We already have a genderless singular in “its”, so some people may prefer that and it is common to use that for a child whose gender is unknown, although some people get offended if you call their child an it which is simply remedied by telling the gender of the child.
They/their have been used to refer to singular people of unknown/unspecified gender for literally hundreds of years and the idea that it's a new 'phenomenon' is a myth popularly used to needless make non-gender conforming people uncomfortable. In fact i'm pretty sure that it wasn't until like the 18th century that prescriptivists started say that it was 'incorrect'. Also y'all know it's demeaning to refer to a human being as an 'it'. source: my degree in languages and linguistics
I come to the comment section to get information on Korean and I see people fighting over gender neutrality and in another lesson there were comments about US politics, like ?? Those are no relevant here. This forum is about learning korean (specially for beginners), can't we focus on that only? You guys have another places to discuss certain things...
Duolingo prefers a preposition rather than adding a whole other verb into the sentence in a form that we have not been taught yet, so "with his hands" is the correct answer with the meaning of "by means of". Also, "their" is a plural possessive which could be used with “children” though sometimes people try to use it to mean "his or her".