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Modified Theories of Gravity and Their Implications for Dark Matter and Dark Energy

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Multiple Choice

Which of the following is a modified theory of gravity that aims to explain the observed acceleration of the universe without the need for dark energy?

  1. f(R) gravity
  2. MOND (Modified Newtonian Dynamics)
  3. TeVeS (Tensor-Vector-Scalar gravity)
  4. All of the above
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