Given the promotion criteria, what is Hannah's main challenge at her law firm?

Hannah's main challenge at her law firm is insufficient professional experience. In many legal environments, professional experience is crucial for promotion, as it demonstrates an individual's ability to handle cases and understand the intricacies of the law effectively. Firms often look for candidates who have a proven track record of working in various legal situations, engaging with clients, and demonstrating sound judgment and skill. If Hannah lacks this experience, she may find it difficult to qualify for advancement, even if she has other positive attributes.

In contrast, other factors like networking opportunities, educational background, and performance evaluations may also play a role in professional development but are secondary to the fundamental requirement of having enough practical experience to meet the firm's expectations for promotion.