Which of the Following Describes a Dual Immersion Language Program

Which of the following describes a dual immersion language program in the United States?

A) A non-native language course in which language and culture are taught and in which proficiency is of concern. The course meets one hour per day, five times per week and instruction is in the target language.
B) A non-native language course that meets once a week for one hour in which both the native language and the target language are used. Proficiency is not of concern, but rather exposure and awareness are of primary importance.
C) By and large the school day is taught in a language other than English. English may however be taught as a school subject for a single period or during one day a week.
D) For half of the instruction time, Language A is the medium of instruction. For the other half Language B is the medium of instruction. Students are generally native speakers of either Language A or Language B.
E) Individuals who are non-native speakers of English receive small group or one-on-one English lessons during the normal school day while other students remain in traditional classes.