In which stage of the lesson will learners be involved in communicative tasks where accuracy rather than fluency is the objective?

- Practice.

Explanation:

As per the question, during the 'practice stage' of the lesson in which the learners objective is to focus more on the accuracy instead of fluency. The deductive approach follows PPP model that involves presentation, practice, and production stages of the lesson. The practice stage is associated with the learners' attempting to practice what teacher has explained in the presentation stage in a controlled manner to ensure accuracy first. This stage is followed by the 'production stage' that lays emphasis on improving the learners' fluency. Thus, 'practice' stage is the answer.