Witkey mode means that some people convert their wisdom, knowledge, ability and experience into actual benefits through the Internet. They generate economic value through solving problems in science, technology, work, life and learning on the Internet.
According to the above definition, which of the followings is the Witkey mode?
A public welfare website established by a college student to answer the learning questions of primary and middle school students for free has been well received by students and parents. A local educational institution has funded and sponsored the expansion of this website to help more students.