Which of the following is an effective way to end a speech?

Ending a speech effectively is crucial in leaving a lasting impression on the audience, and a call to action, a warning, or a rhetorical question serves this purpose very well. A call to action encourages the audience to think critically about what they can do next, motivating them to apply the information presented. A warning can leave the audience with a sense of urgency, making the message more impactful. Meanwhile, a rhetorical question engages the audience to reflect on the topic, stimulating thought and discussion well beyond the conclusion of the speech.

The other options do not serve effectively to close a speech. A long review of all points discussed can cause the audience to lose interest and may not resonate well after a dynamic presentation. An explanation of what could be improved, while constructive, may detract from the positive, forward-moving tone that a conclusion should ideally maintain. A detailed discussion on future topics might overwhelm the audience with too much information and distract from the main point of the speech instead of providing a strong finish.