the audio is in the past tense while the text and correct solution are in present tense
I didn't hear past tense. However I did see that there is a segol under the sin but it's pronounced like it is a patach.
The audio says "ne'asa", which sounds more like the past tense, even though dictionaries say it's pronounced "na'asa". I think it should be "na'ase" in the present tense.