Can a director change a script in a film?

This depends on the if the screen wirter sells the script or not. If the screen writer sells the script then yes, the director can change the script and how much, but a screen writer can sign a contract where they still own the script, but can determine how much of the script a director can change within the script to none at all.

I hope this helps answer your question.

sorry i really dont know

a and b!

dfroos means which is a and b