u/Outrageous_Office461

I've been studying through the Become a Hangeul Master book from ttmik and there's one of the questions there that I didn't understand.
So I had to hear the audio to answer the question and to me it sounded like "넘는" but on the book the only options there were were: 1.널믄 2.넓은 3.넙른

Here’s the link to the audio: https://audio.talktomeinkorean.com/?id=23

It’s quiz 32 under unit 8. Could someone please explain why the answer is 3?

these can look really similar when written in handwriting, is there a trick to see the difference? i was going to send a picture example but it won’t let me…