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Which state of matter has a rigid fixed shape and volume?

  1. Gas

  2. Liquid

  3. Plasma

  4. Solid

The correct answer is: Gas

The correct answer is D. Solid. Solids have a rigid fixed shape and volume due to the strong intermolecular forces holding their particles closely together. Gas (A), liquid (B), and plasma (C) do not have a rigid fixed shape. Gases and liquids take the shape of their container, while plasma is an ionized gas that does not have a fixed shape or volume like solids do.