A three-part pre-assessment to tell time shows students' varying levels of knowledge. Based on this information, what is the most important question for the teacher to answer?

• A. What meaningful differences exist among the students' prior knowledge?
• B. Should students be grouped heterogeneously or homogeneously?
• C. How can I ensure that all students gain new learning at the same rate?
• D. Do the learning styles of the students have an effect on these results?

Answer: (A)