Maria: "I was reading about how people communicated in the past. Before emails and instant messages, people used to write letters and send them through the postal service. It took days, sometimes weeks, for a letter to reach its destination!"
David: "That's hard to imagine! Now, we can send messages instantly to anyone in the world. Communication has become so much faster and easier."
Yukarıdaki diyaloğa göre, geçmişte insanların iletişim kurmak için kullandığı yöntem neydi?
A) They used emails and instant messages.
B) They sent messages instantly to anyone in the world.
C) They wrote letters and sent them through the postal service.
D) They communicated using only face-to-face interactions.