Why is randomization important when assigning students to experimental and control groups in a classroom science activity?

Why is randomization important when assigning students to experimental and control groups in a classroom science activity?

• A. It guarantees the experiment will be successful.
• B. It reduces selection bias and helps ensure equivalence between groups.
• C. It ensures all students get the treatment.
• D. It eliminates the need for a control group.

Answer: (B)