Read the following excerpt from an essay on climate change:
"As the Earth's temperature continues to rise, the evidence of climate change becomes more apparent. Glaciers are melting at alarming rates, sea levels are rising, and extreme weather events are occurring more frequently. This pressing issue has prompted scientists and activists to call for urgent action. In response, governments around the world are beginning to implement policies aimed at reducing carbon emissions. However, the question remains: is this enough to reverse the damage already done?"
Based on the organization of the argument presented in this excerpt, which of the following best describes how the author structures their discussion?