A training course on agricultural planting technology was held in a certain place, and well-known experts were invited to give free lectures to farmers. However, on the day when the classes began, no farmers came to the lecture. Which of the following helps explain the above phenomenon? ['The training class is in the busy season of farmers, farmers have not practiced to attend classes.', 'Some farmers like to learn agricultural technology from their village elders.', 'ome farmers like to learn agricultural technology through TV science programs.', 'Some farmers like to learn agricultural technology through radio broadcasting.']