Read this passage by Mawi Asgedom and answer the question that follows:

Failure Leads to Growth
When I was in high school, I set a goal to break the record on my track team for the one-mile run. The record was 4:18 (4 minutes, 18 seconds). I did everything in my power to break the record. During the off-season, when most people were not practicing, I ran thousands of miles and lifted weights in my bedroom. I stopped drinking soda for two years. Even when the temperature was below zero, I ran for an hour at a time, coming home with icicles on my face.

I failed. I did not run the mile in 4:18. The same thing will happen to you. You will set goals. You will work very hard. You will sometimes fail. But failure may be OK.

Let's look at my high school track goal again. When I was a freshman, I ran the mile in 4:50. When I set the goal to run the 4:18 , I was aiming into my Not Yet Circle.

Even though I failed to break the record, I did run a 4:28 , so 4:28 moved from my Not Yet Circle to my Can Do Circle

Despite failing to reach my goal, my Can Do expanded to include the ability to run a mile in 4:28

Based on the bold text, what claim does Mawi make in this passage?
a. He did not work hard to try to meet his goal
b. He ran thousands of miles to try to meet his goal
c. He achieved his goal of running a mile in 4:18
d. He set a new personal goal to run a mile in 4:28