Why writing "cuisine" instead of "food" is not correct?

If "very delicious" is wrong, then how should that be said?

"southern food tastes good" should also be accepted in my opinion

So now they don't except the word..cuisine..for food....even though it is used so often in these lessons...??? This course needs a lot of work...

I just didnt know what word they were looking for so I got it wrong. Why not "very good" or "tasty" or "yummy"?

the food in the south is delicious