Solution
Option 1 -> While the passage mentions glaciers as fresh water sources, the statement refers more broadly to their overall survival, not just their status as water providers.
Option 2 -> This contradicts the passage, which states that about 80% of global glaciers could survive with rapid emission reductions, not 50%.
Option 3 -> This captures the intended meaning - glaciers are suffering severe consequences from climate change, with examples like Venezuela's last glacier melting, predictions of disappearance in Germany and Mexico, and warnings of continued losses without action.
Option 4 -> The passage indicates glaciers DO provide vital water for millions; the issue is that they themselves are under threat, not that they're unable to help humanity.
Hence, Option 3 -> The opening statement "It's a tough time to be a glacier" is a personification expressing that glaciers are experiencing extreme hardship due to climate change. The passage immediately supports this with evidence of Venezuela's glacier melting earlier than expected, warnings about other glaciers disappearing, and the "grim future" facing them - all indicating they are bearing the brunt of global warming and facing an appalling fate -> correct