Band 7+: "The line graph below shows the percentage of students who preferred brown, blue, and green contact lenses from 2010 to 2020. Summarize the information by selecting and reporting the main features and making comparisons where relevant."

The line graph illustrates changes in students’ preferences for three different contact lens colors – brown, blue and green – over a ten-year period from 2010 to 2020.

Overall,it is clear that brown lenses became increasingly popular throughout the period, while the popularity of blue lenses declined significantly. In contrast, green lenses remained relatively stable and were consistently the least preferred option.

In 2010,blue lenses were the most popular choice, with about 50% of students preferring them.In the following years,this figure gradually decreased to about 30% in 2016 and then to 20% by 2020.At the same time, brown lenses showed an opposite trend.Around 30% of students preferred them in 2010,but their popularity increased year by year.In 2013,brown lenses became more popular than blue ones.By 2020,about 60% of students chose the brown lenses,making them the most popular color and choice.

Green lenses accounted for a much smaller proportion of preferences.Their popularity increased slightly from 15% in 2010 to a peak of about 19% in 2014-2015, before declining modestly to around 15% again in 2020.