I have one quiz that contains MCQ the questions behavior were deffered feedback, after the students attempted the quiz i need to change the behavior to interact with multiple tries to enable them to check their answers and feed back for each choice.
but it doesn't allow the feed back however the question it self has feedback in each choice.
is there any solution for this?
Have you set the Review options in the quiz settings accordingly? "Specific feedback" should be selected under "Later, while the quiz is still opened" and/or under "After the quiz is closed". If students are reviewing their quiz, they must refresh the browser page in order to reflect your new settings.
this is the exam that i change the question behavior on it to interactive with multiple tries
but as you see there is no feedback under the choice and there is no correct answer shown under the choices 
the settings for both quizs
the normal quiz behavior
I would advise to avoid changing the settings of a quiz after students have attempted it. If you do, I think most changes will be reflected correctly, but others may not. Someone else could give you a more precise explanation.