Identifying Rhetorical Strategies in Environmental Discourse

Read the following excerpt from an essay discussing environmental conservation efforts:

“The fate of our planet hangs in a delicate balance, between progress that tears down our forests and a future that nurtures our ecology. While the allure of development tempts us with promises of economic growth, we must not forget that the real wealth lies in the biodiversity that sustains us. It is a profound irony that in our pursuit of prosperity, we may be sowing the seeds of our own destruction.”

Based on the rhetorical strategies employed in this excerpt, which option best identifies the primary rhetorical strategy used to convey the urgency of environmental preservation?