haha.. entered bananas of a child considering the strangeness of duolingo's literal translation, incorrect though.
It doesn't take "kid's". Should it, or is "mtoto" more formal like child?
"kid's" should be fine too
It doesn't take "bananas" either.
That's because "ya" denotes singularity in this case. "A child's bananas" would be "Ndizi za mtoto"