Tone Analysis of Climate Change Speech

Read the following excerpt from a speech delivered by a political leader addressing climate change:

"If we do not act now, the future of our planet hangs in the balance. Emissions are soaring while polar ice caps melt at unprecedented rates. We can no longer afford to bury our heads in the sand; it is time to confront the reality that our actions today will dictate the legacy we leave for future generations. Together, we can initiate meaningful change—not just for ourselves, but for the Earth itself."

Which of the following best describes the tone of the excerpt?