So, i got this question without being introduced to new word ymolchi. Kind of odd to have a multiple choice in that situation.
I agree Allan476701 (though it's not the first time by far) - do you know that if you tap on a new word (when underlined, ie during translation) Duo will show you its translation?
Yes, though at the time i didn't. Like i didn't know there were course notes for a while, as I'm using the mobile app for Android. I do wish 'they' would put links to the course notes in the mobile version.