The company's new policy aims to increase productivity by streamlining workflows, enhancing communication among departments, and to motivate employees with performance bonuses.

✓ Correct Answer: Option B

The original sentence has a faulty parallelism. 'Streamlining' and 'enhancing' are gerunds, so the third element in the list must also be a gerund to maintain parallel structure. 'Motivating' correctly completes the parallel series.