The chronology shows the gradual improvements in bicycle design, as shown in the first answer option.
<h3>What is chronology?</h3>
It is the order in which events happen.
It is the organization of events based on the date they occurred.
In the text to which the question is related, we can see that the narrator shows how the design of bicycles has evolved over time, being modified on certain dates to present a more efficient and desirable product.