Hi, this is the answer .
Tina's best food is daal bhat, isn't it?
Why do we use " isn't it"?
We use " isn't it" because when we write question tags, we should check for words like is, was, do, will etc.
Below are some question tags, left side are the words, right side are the converted question tags form.
is - isn't
was - wasn't
do - doesn't
will - won't
Note-
We write it, he, she , they etc. according to the given sentence.
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