25. Which of the following situations is most analogous to the recent swelling of the Long Valley Caldera? (A) Many small tremors along a particular fault precede a large, magnitude 8 earthquake. (B) A scientist discovers a new species of insect by chance while observing snakes in the Amazon rainforest. (C) Bad road conditions cause a collision between two cars, and poor visibility contributes to a multi-car pile-up. (D) A doctor is unable to give a definitive diagnosis to a patient after assessing symptoms typical of a particular disease.