A middle school teacher wants to assess an English learner's ability to apply scientific concepts in a real-world context, rather than just measuring their content knowledge through a multiple-choice test. Which of the following would be the MOST effective assessment strategy?
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A
A summative, end-of-unit exam with simplified English.
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B
A portfolio assessment where the student collects and reflects on their lab reports and projects over time.
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C
A standardized achievement test to compare the student's performance to national norms.
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D
A diagnostic pre-test administered at the beginning of the school year.