Correct Response: A. Sheltered English immersion (SEI) programs differ from other programs for English language learners because the purpose of SEI is to help English language learners develop academic language proficiency for academic achievement. B and D are incorrect because they focus exclusively on achievement of language development goals and do not incorporate achievement of grade-level academic goals. C is incorrect because it focuses on reducing students' affective filters but does not mention academic achievement in the content areas or language development.
