Cooking is the best!
mothers
mother`s
mothers`

I believe it is "Mother's", becuase the cooking belongs to Jerry's mother. Ans since the cooking is from someone, it should have an apostrophe. Also, "mothers" is not a name, so it should go before the s.

"Jerry's mother's cooking is the best!"

I hope it helps.

Mother's

Explanation:

Mother's because it shows that it the mother's cooking, it shows that it is hers

explanation:

d the picture of the plane