Final answer:
Repetition and lack of variety in educational content, as represented by the option of 'keeping to the same topics and tasks', fails to influence and drive learner motivation, as it can lead to disengagement and boredom.
Step-by-step explanation:
In an educational context, among the listed approaches, keeping to the same topics and tasks would fail to influence and drive learner motivation. It is because the repetition of content and lack of variety can lead to student disengagement and boredom. Clear goals, challenging activities, and giving students a sense of their own success are strategies known to enhance intrinsic motivation, as opposed to monotonous repetition that does not stimulate or challenge students.