What did she boast about in relation to her marks?

The correct answer highlights that she boasted about having better marks than anyone else throughout the term. This reflects a sense of pride in her academic performance, suggesting that her achievements stand out in comparison to her peers. By framing her bragging in this way, it emphasizes her confidence in her abilities and the high level of her accomplishments.

The other choices do not capture the essence of boasting in the same way. For instance, one option suggests a lack of concern regarding low grades, which does not convey a sense of achievement. Another option states that her friends had better marks, which would contradict the notion of boasting about her own success. Lastly, mentioning that she took several difficult exams implies hard work but does not directly relate to boasting about her marks specifically, as it doesn't reflect on her actual grades. Thus, the strongest answer aligns directly with her expressing pride in her superior performance.