Answer:
A. students learning Spanish are taught in Spanish.
Explanation:
In language acquisition theory, full or total immersion means that a particular language that you are learning is used throughout the lesson for everything. This means that if you are taking lessons in math through the full immersion program, you will learn in not in your native language, but rather in the language you are trying to learn (in this case, Spanish).
The other options refer to partial or two-way immersion, rather than full immersion.
The answer is "es" because it means is. so the sentence says He is astronaut.
