Correct option is B
Explanation:
Dialogue completion immerses students in authentic language use, encouraging genuine conversation and reinforcing language structures naturally through practice.
Information Booster:
Such tasks simulate real-life situations, fostering communicative competence and confidence in using the language interactively.
Additional Knowledge:
(1) Dialogue tasks do build fluency, but their primary aim is structured conversation practice.
(3) Error correction may happen as a byproduct, not the main goal.
(4) Implicit grammar learning occurs, but not as a rule-based lesson.