Read the passage and answer: We must take action now. Every day we delay, more wildlife habitats are destroyed, more species pushed toward extinction, more communities devastated by climate change. The time for half-measures and political debate has passed. We need bold policies, immediate funding, and citizens willing to demand change from their leaders. What is the author's primary purpose?

Author's purpose categories: (1) PERSUADE — argues for a position, calls to action; uses emotional language, evidence, strong claims; (2) INFORM/EXPLAIN — presents facts and information; neutral tone; defines, describes, explains; (3) ENTERTAIN — story, humor, drama; engages emotionally; (4) DESCRIBE — paints a picture; sensory details. This passage clearly persuades — 'We must take action now,' 'time for half-measures has passed,' 'need bold policies.' Strong emotional and directive language signals persuasive purpose. Distractor analysis: not entertainment (no story or characters), not explanation (no scientific facts presented), not description (not describing a scene). Purpose recognition: (1) Persuasive writing often uses 'must,' 'should,' 'need to,' direct address ('you,' 'we'), emotional language, calls to action; (2) Informative writing uses neutral facts, definitions, organized presentation; (3) Tone words signal purpose: passionate (persuasive), neutral (informative), warm (engaging), descriptive (paints picture).