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How does soil help anchor a plant in the ground?

  1. By providing water and nutrients

  2. By providing oxygen

  3. By providing structure

  4. By providing some shade

The correct answer is: By providing structure

Soil helps anchor a plant in the ground by providing structure through which the plant's roots can grow and spread. Options A and B are incorrect because while soil does provide water, nutrients, and oxygen to the plant, these do not directly contribute to anchoring the plant in the ground. Option D is incorrect because soil does not provide shade to a plant - leaves and other plant parts may provide shade but not the soil itself. Option C is the correct answer because the structure and composition of soil allows roots to spread and anchor the plant firmly in the ground.