Given the question: Q: Where do streams often start? Read this paragraph and choose the correct option from the provided answers: Streams often start in mountains, where the land is very steep. You can see an example in Figure below . A mountain stream flows very quickly because of the steep slope. This causes a lot of erosion and very little deposition. The rapidly falling water digs down into the stream bed and makes it deeper. It carves a narrow, V-shaped channel. Choices: - valleys - oceans - plains - mountains A:
The answer is:
mountains