Which of the following best identifies duckworth claim in the speech

Based on the given question, the best answer for this would be:

A common trait that successful people possess is grit, as it pushes them to persevere despite obstacles.

Duckworth had discussed in her speech that despite having outstanding grades or even not okay academically, there will always be a struggle in life wherein you have to face it. Grit is what successful have in order to challenge themselves further in the situation to make every one of it count. This had sparked up in her when she was still studying and had observed that this trait can developed in the long term.