Final answer:
Option b) corrects the verb tense issue by using the past perfect and simple past tenses to maintain a clear and consistent time frame before and after Saha met Ms. Cochran.
Step-by-step explanation:
When addressing verb tenses in writing, it's crucial to maintain consistency to provide clarity to the reader. In the case presented, option b) is the correct choice because it uses consistent past tense to describe events and Saha's thought process before and after meeting Ms. Cochran. The first sentence sets the time frame before the meeting in the past perfect tense ('had always thought') to show that this belief was held up until the meeting. The second sentence uses simple past tense ('taught') to describe something that has been completed in the past. This choice clearly indicates a time sequence: Saha had a belief, then she met Ms. Cochran, and as a result, her belief changed.