Rhetorical Strategy in Activism Speech

In this passage from a speech delivered by an environmental activist, the speaker uses various rhetorical strategies to persuade the audience about the urgency of climate change:

'We stand at a crossroads, and history will judge us by the choices we make today. Will we continue to ignore the warning signs, or will we rise to the occasion and safeguard the future for generations to come? The earth is not just a resource to be exploited, it is our home. Each day we delay action, we endanger not only our planet, but our children’s future.'

Based on this excerpt, which rhetorical strategy is most prominently highlighted in the speaker's argument?