@Baek Siyun i had the same question, both the parents are hearing so how is the child deaf ? Quick Google search , they could have recessive gene which is passed down to the child or complications in pregnancy can also lead to deafness . In earlier times when medicine was not as developed lil children would get flu/fever and can cause hearing loss. So there's that 🙌
@Colaaaaaaahh thank you so much for explaining. See! This is how you answer a question. I was just asking why? You could've just simply answered this or could've just ignored the question if you didn't know the answer. These people are always ready to pick a fight.