One-way communication occurs when messages flow primarily from sender to receiver with little or no feedback. In a lecture where the teacher speaks and students only listen and take notes, interaction is largely unidirectional and students are passive recipients.
Option A:
Option A is correct because the lecture described involves the teacher speaking continuously while students only listen and write, giving almost no feedback. This is the classic pattern of one-way, teacher-centred communication.
Option B:
Option B (seminar with student presentations and discussion) includes multiple speakers and active participation, making it two-way or multi-way communication rather than one-way.
Option C:
Option C uses questioning techniques, which invite answers and feedback from students, turning the session into interactive two-way communication.
Option D:
Option D, group discussions led by students, is strongly interactive and multi-directional, not one-way; many participants send and receive messages.
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