A few years ago, if a student got their phone out in a lecture, this was quite a clear sign that they were no longer paying attention. But today, using a phone or tablet in the lecture hall is actually encouraged by universities, many of which are asking students to use their own technology to access learning resources.What is the main idea of the article?A Many students have begun to use their phones during lectures since years ago.B Using a phone in a lecture has always been a sign of distraction.C Students are discouraged to use phones to show their attention in classes nowadays.D Many universities encourage students to use technology to learn these days.

A few years ago, if a student got their phone out in a lecture, this was quite a clear sign that they were no longer paying attention. But today, using a phone or tablet in the lecture hall is actually encouraged by universities, many of which are asking students to use their own technology to access learning resources. What is the main idea of the article? A Many students have begun to use their phones during lectures since years ago. B Using a phone in a lecture has always been a sign of distraction. C Students are discouraged to use phones to show their attention in classes nowadays. D Many universities encourage students to use technology to learn these days.