I think my mission is to create a good home. Home isn't just walls or people, or memories connected with

Прилагательное child необходимо преобразовать в форму множественного числа родительного падежа.

Во множественном числе от child образуется children, а в форме родительного падежа children's.

I think my mission is to create a good home. Home isn't just walls or people, or memories connected with children's.

Ответ: children's