In a progressive classroom assessment is:

Progressive education (the child-centred philosophy associated with thinkers like John Dewey) treats teaching and learning as a continuous, evolving process built around the learner's growth. In this framework, assessment is not a single fixed test administered at one point in time -- it is understood as dynamic: an ongoing activity woven into everyday teaching that keeps adapting as the learner develops.

In a progressive classroom, a teacher continuously observes, questions, and responds to how a child is learning, adjusting both teaching and assessment as understanding grows. That continuously adapting character is what makes 'Dynamic' the term that correctly completes the statement -- assessment here is a living part of the teaching process, not a one-time measurement.

Contrasting the remaining terms confirms the choice:

• Objective -- describes a scoring property (that a test gives the same result regardless of who marks it), a separate quality of measurement design.

• Summative -- describes assessment carried out at the end of a course or unit to certify overall achievement, such as a final examination.

• Normative -- describes assessment that ranks a student's performance against other students (norm-referencing), a comparative measure.

None of Objective, Summative, or Normative describe the continuously adapting, classroom-embedded process progressive education is known for, which is why 'Dynamic' is the term that fits.