In recent years, online learning has become a popular option for middle school students. With advances in technology, students are able to access high-quality educational content from the comfort of their own home. Online learning provides students with the flexibility to work at their own pace and gives them access to a wide range of courses and resources. The structure of online learning also allows students to take classes from anywhere in the world. Additionally, online classes are often more affordable than traditional learning.
Which of the following is a central idea of this paragraph?