As an Elementary School Teacher, You Would Like to Foster

As an elementary school teacher, you would like to foster autonomy in your students' writing. Your best course of action would be to provide a(n)

A) very clear set of expectations and topics from which students can choose.
B) assignment that asks students to write about a topic that is important to them.
C) assignment based on topics drawn from the curriculum for your class.
D) assignment that allows students to choose their own topic, limiting only length and format.