Correct Response: C. In SEI classrooms, English learners should engage with grade-level content to the same degree as students who are native English speakers. The primary difference between the two populations is that English learners should receive supports to facilitate comprehension and communication according to their individual English language proficiency levels. It is typical of an entering-level English learner to produce responses to academic content questions using a few words. The most effective way for the SEI teacher to support the student's language development and learning is to validate the student's correct responses and extend them using complete sentences. This practice affirms, reinforces, and encourages the student's content development, while also providing a model for extending the student's language skills that is reasonable and appropriate for the student's current English language proficiency level. A is incorrect because it sends the message that the student's efforts at communicating understanding are not effective. B does not provide the student with any scaffolds to foster language development. D requires the student to participate in English communication at a level that is unreasonably high for an entering-level English learner.