Unless the exam format is literally the standard or objective, the format of the exam or project should be negotiable.
Unless you can show me a standard from anywhere in the world that specifically outlines the ability to answer a multiple choice question as the learning outcome, why in the world would we ever provide children with no other format to exhibit their learning?
And yet how many quizzes, mid-terms, final exams, standardized tests, homework assignments, minor assignments or major projects invite children to negotiate their format?
The lack of legitimate answers to these questions tell us one thing: most assessment formats are less about the students and more about the system. Cui bono?
This is exactly why there is such a chasm between the idea of differentiated instruction and standardized assessment.
The paradox is enough to drive anyone to drink.