What did Joana's approach to studying lead to during her mock test?

Joana's approach to studying ultimately resulted in failure from unpreparedness, suggesting that her study habits were not effective or sufficient for the material she needed to master. This could imply that she may not have engaged with the content deeply, practiced relevant skills, or managed her study time well. An unprepared student might not have reviewed the topics adequately, resulting in performance that doesn’t reflect their true potential or understanding.

In contrast, the other options focus on positive outcomes associated with effective study practices, such as a thorough understanding, confidence in knowledge, or clear comprehension of topics. These responses reflect what typically happens when a student adequately prepares for a test. For example, a thorough understanding would indicate thorough engagement with the material, and this could lead to success or confidence. However, since Joana did not achieve these positive outcomes, it reinforces the idea that her approach did not meet the necessary level of preparation, which aligns with the idea of failure from lack of readiness.