Analyzing Organizational Strategy in a Speech

Read the excerpt below from a speech delivered by a local environmental activist. The speech aims to raise awareness about climate change and encourage community engagement in sustainable practices.

"We stand at a crucial juncture in history. Our planet is warming, glaciers are melting, and extreme weather events have become commonplace. This isn't just an environmental issue; it's a challenge that threatens our health, our economy, and our future. But there is hope. By uniting as a community, we can implement small yet impactful changes in our daily lives that collectively lead to significant environmental benefits. Imagine a future where our children can breathe fresh air, drink clean water, and thrive in a world undamaged by neglect. This is within our reach, but we must act now!"

Based on the structure of the speech, which organizational strategy is predominantly employed to enhance the speaker's argument?