Which of the following patterns of organization is appropriate for a speaker who needs to grab the attention of the audience at the beginning of a speech?

The appropriate choice for grabbing the attention of an audience at the beginning of a speech is a climactic structure. This organization pattern is designed to build anticipation and excitement as it progresses towards the main point or climax. At the outset of a speech, using a climactic structure allows the speaker to engage the audience effectively by unfolding information in an ascending order of significance or intensity, thereby capturing their interest right away.

In contrast, anticlimactic structure tends to lead to a disappointing or less impactful conclusion, which is not ideal for initially captivating an audience. It often presents information in a way that fails to build excitement or interest, which can detract from the speaker's effectiveness in engaging the audience at the start of a presentation. Therefore, choosing a climactic structure aligns with the goal of seizing attention and encouraging further listening.